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Commit 8c1c77ff authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (75 commits)
  mmc: core: eMMC bus width may not work on all platforms
  mmc: sdhci: Auto-CMD23 fixes.
  mmc: sdhci: Auto-CMD23 support.
  mmc: core: Block CMD23 support for UHS104/SDXC cards.
  mmc: sdhci: Implement MMC_CAP_CMD23 for SDHCI.
  mmc: core: Use CMD23 for multiblock transfers when we can.
  mmc: quirks: Add/remove quirks conditional support.
  mmc: Add new VUB300 USB-to-SD/SDIO/MMC driver
  mmc: sdhci-pxa: Add quirks for DMA/ADMA to match h/w
  mmc: core: duplicated trial with same freq in mmc_rescan_try_freq()
  mmc: core: add support for eMMC Dual Data Rate
  mmc: core: eMMC signal voltage does not use CMD11
  mmc: sdhci-pxa: add platform code for UHS signaling
  mmc: sdhci: add hooks for setting UHS in platform specific code
  mmc: core: clear MMC_PM_KEEP_POWER flag on resume
  mmc: dw_mmc: fixed wrong regulator_enable in suspend/resume
  mmc: sdhi: allow powering down controller with no card inserted
  mmc: tmio: runtime suspend the controller, where possible
  mmc: sdhi: support up to 3 interrupt sources
  mmc: sdhi: print physical base address and clock rate
  ...
parents f3ae1c75 08ee80cc
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Documentation/ioctl/ioctl-number.txt
View file @ 8c1c77ff
......@@ -304,6 +304,7 @@ Code Seq#(hex) Include File Comments
0xB0 all RATIO devices in development:
<mailto:vgo@ratio.de>
0xB1 00-1F PPPoX <mailto:mostrows@styx.uwaterloo.ca>
0xB3 00 linux/mmc/ioctl.h
0xC0 00-0F linux/usb/iowarrior.h
0xCB 00-1F CBM serial IEC bus in development:
<mailto:michael.klein@puffin.lb.shuttle.de>
......
Documentation/mmc/00-INDEX
View file @ 8c1c77ff
......@@ -2,3 +2,5 @@
- this file
mmc-dev-attrs.txt
- info on SD and MMC device attributes
mmc-dev-parts.txt
- info on SD and MMC device partitions
Documentation/mmc/mmc-dev-attrs.txt
View file @ 8c1c77ff
SD and MMC Block Device Attributes
==================================
These attributes are defined for the block devices associated with the
SD or MMC device.
The following attributes are read/write.
force_ro Enforce read-only access even if write protect switch is off.
SD and MMC Device Attributes
============================
......
Documentation/mmc/mmc-dev-parts.txt 0 → 100644
View file @ 8c1c77ff
SD and MMC Device Partitions
============================
Device partitions are additional logical block devices present on the
SD/MMC device.
As of this writing, MMC boot partitions as supported and exposed as
/dev/mmcblkXboot0 and /dev/mmcblkXboot1, where X is the index of the
parent /dev/mmcblkX.
MMC Boot Partitions
===================
Read and write access is provided to the two MMC boot partitions. Due to
the sensitive nature of the boot partition contents, which often store
a bootloader or bootloader configuration tables crucial to booting the
platform, write access is disabled by default to reduce the chance of
accidental bricking.
To enable write access to /dev/mmcblkXbootY, disable the forced read-only
access with:
echo 0 > /sys/block/mmcblkXbootY/force_ro
To re-enable read-only access:
echo 1 > /sys/block/mmcblkXbootY/force_ro
MAINTAINERS
View file @ 8c1c77ff
......@@ -6800,6 +6800,13 @@ L: lm-sensors@lm-sensors.org
S: Maintained
F: drivers/hwmon/vt8231.c
VUB300 USB to SDIO/SD/MMC bridge chip
M: Tony Olech <tony.olech@elandigitalsystems.com>
L: linux-mmc@vger.kernel.org
L: linux-usb@vger.kernel.org
S: Supported
F: drivers/mmc/host/vub300.c
W1 DALLAS'S 1-WIRE BUS
M: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
S: Maintained
......
arch/arm/mach-tegra/include/mach/sdhci.h
View file @ 8c1c77ff
......@@ -24,6 +24,7 @@ struct tegra_sdhci_platform_data {
int wp_gpio;
int power_gpio;
int is_8bit;
int pm_flags;
};
#endif
drivers/mmc/card/block.c
View file @ 8c1c77ff
......@@ -31,7 +31,11 @@
#include <linux/mutex.h>
#include <linux/scatterlist.h>
#include <linux/string_helpers.h>
#include <linux/delay.h>
#include <linux/capability.h>
#include <linux/compat.h>
#include <linux/mmc/ioctl.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
......@@ -48,6 +52,13 @@ MODULE_ALIAS("mmc:block");
#endif
#define MODULE_PARAM_PREFIX "mmcblk."
#define INAND_CMD38_ARG_EXT_CSD 113
#define INAND_CMD38_ARG_ERASE 0x00
#define INAND_CMD38_ARG_TRIM 0x01
#define INAND_CMD38_ARG_SECERASE 0x80
#define INAND_CMD38_ARG_SECTRIM1 0x81
#define INAND_CMD38_ARG_SECTRIM2 0x88
static DEFINE_MUTEX(block_mutex);
/*
......@@ -64,6 +75,7 @@ static int max_devices;
/* 256 minors, so at most 256 separate devices */
static DECLARE_BITMAP(dev_use, 256);
static DECLARE_BITMAP(name_use, 256);
/*
* There is one mmc_blk_data per slot.
......@@ -72,9 +84,24 @@ struct mmc_blk_data {
spinlock_t lock;
struct gendisk *disk;
struct mmc_queue queue;
struct list_head part;
unsigned int flags;
#define MMC_BLK_CMD23 (1 << 0) /* Can do SET_BLOCK_COUNT for multiblock */
#define MMC_BLK_REL_WR (1 << 1) /* MMC Reliable write support */
unsigned int usage;
unsigned int read_only;
unsigned int part_type;
unsigned int name_idx;
/*
* Only set in main mmc_blk_data associated
* with mmc_card with mmc_set_drvdata, and keeps
* track of the current selected device partition.
*/
unsigned int part_curr;
struct device_attribute force_ro;
};
static DEFINE_MUTEX(open_lock);
......@@ -97,17 +124,22 @@ static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk)
return md;
}
static inline int mmc_get_devidx(struct gendisk *disk)
{
int devmaj = MAJOR(disk_devt(disk));
int devidx = MINOR(disk_devt(disk)) / perdev_minors;
if (!devmaj)
devidx = disk->first_minor / perdev_minors;
return devidx;
}
static void mmc_blk_put(struct mmc_blk_data *md)
{
mutex_lock(&open_lock);
md->usage--;
if (md->usage == 0) {
int devmaj = MAJOR(disk_devt(md->disk));
int devidx = MINOR(disk_devt(md->disk)) / perdev_minors;
if (!devmaj)
devidx = md->disk->first_minor / perdev_minors;
int devidx = mmc_get_devidx(md->disk);
blk_cleanup_queue(md->queue.queue);
__clear_bit(devidx, dev_use);
......@@ -118,6 +150,38 @@ static void mmc_blk_put(struct mmc_blk_data *md)
mutex_unlock(&open_lock);
}
static ssize_t force_ro_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int ret;
struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev));
ret = snprintf(buf, PAGE_SIZE, "%d",
get_disk_ro(dev_to_disk(dev)) ^
md->read_only);
mmc_blk_put(md);
return ret;
}
static ssize_t force_ro_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int ret;
char *end;
struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev));
unsigned long set = simple_strtoul(buf, &end, 0);
if (end == buf) {
ret = -EINVAL;
goto out;
}
set_disk_ro(dev_to_disk(dev), set || md->read_only);
ret = count;
out:
mmc_blk_put(md);
return ret;
}
static int mmc_blk_open(struct block_device *bdev, fmode_t mode)
{
struct mmc_blk_data *md = mmc_blk_get(bdev->bd_disk);
......@@ -158,35 +222,255 @@ mmc_blk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
return 0;
}
struct mmc_blk_ioc_data {
struct mmc_ioc_cmd ic;
unsigned char *buf;
u64 buf_bytes;
};
static struct mmc_blk_ioc_data *mmc_blk_ioctl_copy_from_user(
struct mmc_ioc_cmd __user *user)
{
struct mmc_blk_ioc_data *idata;
int err;
idata = kzalloc(sizeof(*idata), GFP_KERNEL);
if (!idata) {
err = -ENOMEM;
goto out;
}
if (copy_from_user(&idata->ic, user, sizeof(idata->ic))) {
err = -EFAULT;
goto idata_err;
}
idata->buf_bytes = (u64) idata->ic.blksz * idata->ic.blocks;
if (idata->buf_bytes > MMC_IOC_MAX_BYTES) {
err = -EOVERFLOW;
goto idata_err;
}
idata->buf = kzalloc(idata->buf_bytes, GFP_KERNEL);
if (!idata->buf) {
err = -ENOMEM;
goto idata_err;
}
if (copy_from_user(idata->buf, (void __user *)(unsigned long)
idata->ic.data_ptr, idata->buf_bytes)) {
err = -EFAULT;
goto copy_err;
}
return idata;
copy_err:
kfree(idata->buf);
idata_err:
kfree(idata);
out:
return ERR_PTR(err);
}
static int mmc_blk_ioctl_cmd(struct block_device *bdev,
struct mmc_ioc_cmd __user *ic_ptr)
{
struct mmc_blk_ioc_data *idata;
struct mmc_blk_data *md;
struct mmc_card *card;
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct mmc_request mrq = {0};
struct scatterlist sg;
int err;
/*
* The caller must have CAP_SYS_RAWIO, and must be calling this on the
* whole block device, not on a partition. This prevents overspray
* between sibling partitions.
*/
if ((!capable(CAP_SYS_RAWIO)) || (bdev != bdev->bd_contains))
return -EPERM;
idata = mmc_blk_ioctl_copy_from_user(ic_ptr);
if (IS_ERR(idata))
return PTR_ERR(idata);
cmd.opcode = idata->ic.opcode;
cmd.arg = idata->ic.arg;
cmd.flags = idata->ic.flags;
data.sg = &sg;
data.sg_len = 1;
data.blksz = idata->ic.blksz;
data.blocks = idata->ic.blocks;
sg_init_one(data.sg, idata->buf, idata->buf_bytes);
if (idata->ic.write_flag)
data.flags = MMC_DATA_WRITE;
else
data.flags = MMC_DATA_READ;
mrq.cmd = &cmd;
mrq.data = &data;
md = mmc_blk_get(bdev->bd_disk);
if (!md) {
err = -EINVAL;
goto cmd_done;
}
card = md->queue.card;
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto cmd_done;
}
mmc_claim_host(card->host);
if (idata->ic.is_acmd) {
err = mmc_app_cmd(card->host, card);
if (err)
goto cmd_rel_host;
}
/* data.flags must already be set before doing this. */
mmc_set_data_timeout(&data, card);
/* Allow overriding the timeout_ns for empirical tuning. */
if (idata->ic.data_timeout_ns)
data.timeout_ns = idata->ic.data_timeout_ns;
if ((cmd.flags & MMC_RSP_R1B) == MMC_RSP_R1B) {
/*
* Pretend this is a data transfer and rely on the host driver
* to compute timeout. When all host drivers support
* cmd.cmd_timeout for R1B, this can be changed to:
*
* mrq.data = NULL;
* cmd.cmd_timeout = idata->ic.cmd_timeout_ms;
*/
data.timeout_ns = idata->ic.cmd_timeout_ms * 1000000;
}
mmc_wait_for_req(card->host, &mrq);
if (cmd.error) {
dev_err(mmc_dev(card->host), "%s: cmd error %d\n",
__func__, cmd.error);
err = cmd.error;
goto cmd_rel_host;
}
if (data.error) {
dev_err(mmc_dev(card->host), "%s: data error %d\n",
__func__, data.error);
err = data.error;
goto cmd_rel_host;
}
/*
* According to the SD specs, some commands require a delay after
* issuing the command.
*/
if (idata->ic.postsleep_min_us)
usleep_range(idata->ic.postsleep_min_us, idata->ic.postsleep_max_us);
if (copy_to_user(&(ic_ptr->response), cmd.resp, sizeof(cmd.resp))) {
err = -EFAULT;
goto cmd_rel_host;
}
if (!idata->ic.write_flag) {
if (copy_to_user((void __user *)(unsigned long) idata->ic.data_ptr,
idata->buf, idata->buf_bytes)) {
err = -EFAULT;
goto cmd_rel_host;
}
}
cmd_rel_host:
mmc_release_host(card->host);
cmd_done:
mmc_blk_put(md);
kfree(idata->buf);
kfree(idata);
return err;
}
static int mmc_blk_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
int ret = -EINVAL;
if (cmd == MMC_IOC_CMD)
ret = mmc_blk_ioctl_cmd(bdev, (struct mmc_ioc_cmd __user *)arg);
return ret;
}
#ifdef CONFIG_COMPAT
static int mmc_blk_compat_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
return mmc_blk_ioctl(bdev, mode, cmd, (unsigned long) compat_ptr(arg));
}
#endif
static const struct block_device_operations mmc_bdops = {
.open = mmc_blk_open,
.release = mmc_blk_release,
.getgeo = mmc_blk_getgeo,
.owner = THIS_MODULE,
.ioctl = mmc_blk_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = mmc_blk_compat_ioctl,
#endif
};
struct mmc_blk_request {
struct mmc_request mrq;
struct mmc_command sbc;
struct mmc_command cmd;
struct mmc_command stop;
struct mmc_data data;
};
static inline int mmc_blk_part_switch(struct mmc_card *card,
struct mmc_blk_data *md)
{
int ret;
struct mmc_blk_data *main_md = mmc_get_drvdata(card);
if (main_md->part_curr == md->part_type)
return 0;
if (mmc_card_mmc(card)) {
card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
card->ext_csd.part_config |= md->part_type;
ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_PART_CONFIG, card->ext_csd.part_config,
card->ext_csd.part_time);
if (ret)
return ret;
}
main_md->part_curr = md->part_type;
return 0;
}
static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)
{
int err;
u32 result;
__be32 *blocks;
struct mmc_request mrq;
struct mmc_command cmd;
struct mmc_data data;
struct mmc_request mrq = {0};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
unsigned int timeout_us;
struct scatterlist sg;
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_APP_CMD;
cmd.arg = card->rca << 16;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
......@@ -203,8 +487,6 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)
cmd.arg = 0;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
memset(&data, 0, sizeof(struct mmc_data));
data.timeout_ns = card->csd.tacc_ns * 100;
data.timeout_clks = card->csd.tacc_clks * 100;
......@@ -223,8 +505,6 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)
data.sg = &sg;
data.sg_len = 1;
memset(&mrq, 0, sizeof(struct mmc_request));
mrq.cmd = &cmd;
mrq.data = &data;
......@@ -247,10 +527,9 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)
static u32 get_card_status(struct mmc_card *card, struct request *req)
{
struct mmc_command cmd;
struct mmc_command cmd = {0};
int err;
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SEND_STATUS;
if (!mmc_host_is_spi(card->host))
cmd.arg = card->rca << 16;
......@@ -269,8 +548,6 @@ static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
unsigned int from, nr, arg;
int err = 0;
mmc_claim_host(card->host);
if (!mmc_can_erase(card)) {
err = -EOPNOTSUPP;
goto out;
......@@ -284,14 +561,22 @@ static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
else
arg = MMC_ERASE_ARG;
if (card->quirks & MMC_QUIRK_INAND_CMD38) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
INAND_CMD38_ARG_EXT_CSD,
arg == MMC_TRIM_ARG ?
INAND_CMD38_ARG_TRIM :
INAND_CMD38_ARG_ERASE,
0);
if (err)
goto out;
}
err = mmc_erase(card, from, nr, arg);
out:
spin_lock_irq(&md->lock);
__blk_end_request(req, err, blk_rq_bytes(req));
spin_unlock_irq(&md->lock);
mmc_release_host(card->host);
return err ? 0 : 1;
}
......@@ -303,8 +588,6 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
unsigned int from, nr, arg;
int err = 0;
mmc_claim_host(card->host);
if (!mmc_can_secure_erase_trim(card)) {
err = -EOPNOTSUPP;
goto out;
......@@ -318,19 +601,74 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
else
arg = MMC_SECURE_ERASE_ARG;
if (card->quirks & MMC_QUIRK_INAND_CMD38) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
INAND_CMD38_ARG_EXT_CSD,
arg == MMC_SECURE_TRIM1_ARG ?
INAND_CMD38_ARG_SECTRIM1 :
INAND_CMD38_ARG_SECERASE,
0);
if (err)
goto out;
}
err = mmc_erase(card, from, nr, arg);
if (!err && arg == MMC_SECURE_TRIM1_ARG)
if (!err && arg == MMC_SECURE_TRIM1_ARG) {
if (card->quirks & MMC_QUIRK_INAND_CMD38) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
INAND_CMD38_ARG_EXT_CSD,
INAND_CMD38_ARG_SECTRIM2,
0);
if (err)
goto out;
}
err = mmc_erase(card, from, nr, MMC_SECURE_TRIM2_ARG);
}
out:
spin_lock_irq(&md->lock);
__blk_end_request(req, err, blk_rq_bytes(req));
spin_unlock_irq(&md->lock);
mmc_release_host(card->host);
return err ? 0 : 1;
}
static int mmc_blk_issue_flush(struct mmc_queue *mq, struct request *req)
{
struct mmc_blk_data *md = mq->data;
/*
* No-op, only service this because we need REQ_FUA for reliable
* writes.
*/
spin_lock_irq(&md->lock);
__blk_end_request_all(req, 0);
spin_unlock_irq(&md->lock);
return 1;
}
/*
* Reformat current write as a reliable write, supporting
* both legacy and the enhanced reliable write MMC cards.
* In each transfer we'll handle only as much as a single
* reliable write can handle, thus finish the request in
* partial completions.
*/
static inline void mmc_apply_rel_rw(struct mmc_blk_request *brq,
struct mmc_card *card,
struct request *req)
{
if (!(card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN)) {
/* Legacy mode imposes restrictions on transfers. */
if (!IS_ALIGNED(brq->cmd.arg, card->ext_csd.rel_sectors))
brq->data.blocks = 1;
if (brq->data.blocks > card->ext_csd.rel_sectors)
brq->data.blocks = card->ext_csd.rel_sectors;
else if (brq->data.blocks < card->ext_csd.rel_sectors)
brq->data.blocks = 1;
}
}
static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
{
struct mmc_blk_data *md = mq->data;
......@@ -338,10 +676,17 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
struct mmc_blk_request brq;
int ret = 1, disable_multi = 0;
mmc_claim_host(card->host);
/*
* Reliable writes are used to implement Forced Unit Access and
* REQ_META accesses, and are supported only on MMCs.
*/
bool do_rel_wr = ((req->cmd_flags & REQ_FUA) ||
(req->cmd_flags & REQ_META)) &&
(rq_data_dir(req) == WRITE) &&
(md->flags & MMC_BLK_REL_WR);
do {
struct mmc_command cmd;
struct mmc_command cmd = {0};
u32 readcmd, writecmd, status = 0;
memset(&brq, 0, sizeof(struct mmc_blk_request));
......@@ -374,12 +719,12 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
if (disable_multi && brq.data.blocks > 1)
brq.data.blocks = 1;
if (brq.data.blocks > 1) {
if (brq.data.blocks > 1 || do_rel_wr) {
/* SPI multiblock writes terminate using a special
* token, not a STOP_TRANSMISSION request.
*/
if (!mmc_host_is_spi(card->host)
|| rq_data_dir(req) == READ)
if (!mmc_host_is_spi(card->host) ||
rq_data_dir(req) == READ)
brq.mrq.stop = &brq.stop;
readcmd = MMC_READ_MULTIPLE_BLOCK;
writecmd = MMC_WRITE_MULTIPLE_BLOCK;
......@@ -396,6 +741,38 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
brq.data.flags |= MMC_DATA_WRITE;
}
if (do_rel_wr)
mmc_apply_rel_rw(&brq, card, req);
/*
* Pre-defined multi-block transfers are preferable to
* open ended-ones (and necessary for reliable writes).
* However, it is not sufficient to just send CMD23,
* and avoid the final CMD12, as on an error condition
* CMD12 (stop) needs to be sent anyway. This, coupled
* with Auto-CMD23 enhancements provided by some
* hosts, means that the complexity of dealing
* with this is best left to the host. If CMD23 is
* supported by card and host, we'll fill sbc in and let
* the host deal with handling it correctly. This means
* that for hosts that don't expose MMC_CAP_CMD23, no
* change of behavior will be observed.
*
* N.B: Some MMC cards experience perf degradation.
* We'll avoid using CMD23-bounded multiblock writes for
* these, while retaining features like reliable writes.
*/
if ((md->flags & MMC_BLK_CMD23) &&
mmc_op_multi(brq.cmd.opcode) &&
(do_rel_wr || !(card->quirks & MMC_QUIRK_BLK_NO_CMD23))) {
brq.sbc.opcode = MMC_SET_BLOCK_COUNT;
brq.sbc.arg = brq.data.blocks |
(do_rel_wr ? (1 << 31) : 0);
brq.sbc.flags = MMC_RSP_R1 | MMC_CMD_AC;
brq.mrq.sbc = &brq.sbc;
}
mmc_set_data_timeout(&brq.data, card);
brq.data.sg = mq->sg;
......@@ -431,7 +808,8 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
* until later as we need to wait for the card to leave
* programming mode even when things go wrong.
*/
if (brq.cmd.error || brq.data.error || brq.stop.error) {
if (brq.sbc.error || brq.cmd.error ||
brq.data.error || brq.stop.error) {
if (brq.data.blocks > 1 && rq_data_dir(req) == READ) {
/* Redo read one sector at a time */
printk(KERN_WARNING "%s: retrying using single "
......@@ -442,6 +820,13 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
status = get_card_status(card, req);
}
if (brq.sbc.error) {
printk(KERN_ERR "%s: error %d sending SET_BLOCK_COUNT "
"command, response %#x, card status %#x\n",
req->rq_disk->disk_name, brq.sbc.error,
brq.sbc.resp[0], status);
}
if (brq.cmd.error) {
printk(KERN_ERR "%s: error %d sending read/write "
"command, response %#x, card status %#x\n",
......@@ -520,8 +905,6 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
spin_unlock_irq(&md->lock);
} while (ret);
mmc_release_host(card->host);
return 1;
cmd_err:
......@@ -548,8 +931,6 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
spin_unlock_irq(&md->lock);
}
mmc_release_host(card->host);
spin_lock_irq(&md->lock);
while (ret)
ret = __blk_end_request(req, -EIO, blk_rq_cur_bytes(req));
......@@ -560,14 +941,31 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
{
int ret;
struct mmc_blk_data *md = mq->data;
struct mmc_card *card = md->queue.card;
mmc_claim_host(card->host);
ret = mmc_blk_part_switch(card, md);
if (ret) {
ret = 0;
goto out;
}
if (req->cmd_flags & REQ_DISCARD) {
if (req->cmd_flags & REQ_SECURE)
return mmc_blk_issue_secdiscard_rq(mq, req);
ret = mmc_blk_issue_secdiscard_rq(mq, req);
else
return mmc_blk_issue_discard_rq(mq, req);
ret = mmc_blk_issue_discard_rq(mq, req);
} else if (req->cmd_flags & REQ_FLUSH) {
ret = mmc_blk_issue_flush(mq, req);
} else {
return mmc_blk_issue_rw_rq(mq, req);
ret = mmc_blk_issue_rw_rq(mq, req);
}
out:
mmc_release_host(card->host);
return ret;
}
static inline int mmc_blk_readonly(struct mmc_card *card)
......@@ -576,7 +974,11 @@ static inline int mmc_blk_readonly(struct mmc_card *card)
!(card->csd.cmdclass & CCC_BLOCK_WRITE);
}
static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
struct device *parent,
sector_t size,
bool default_ro,
const char *subname)
{
struct mmc_blk_data *md;
int devidx, ret;
......@@ -592,6 +994,19 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
goto out;
}
/*
* !subname implies we are creating main mmc_blk_data that will be
* associated with mmc_card with mmc_set_drvdata. Due to device
* partitions, devidx will not coincide with a per-physical card
* index anymore so we keep track of a name index.
*/
if (!subname) {
md->name_idx = find_first_zero_bit(name_use, max_devices);
__set_bit(md->name_idx, name_use);
}
else
md->name_idx = ((struct mmc_blk_data *)
dev_to_disk(parent)->private_data)->name_idx;
/*
* Set the read-only status based on the supported commands
......@@ -606,6 +1021,7 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
}
spin_lock_init(&md->lock);
INIT_LIST_HEAD(&md->part);
md->usage = 1;
ret = mmc_init_queue(&md->queue, card, &md->lock);
......@@ -620,8 +1036,8 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
md->disk->fops = &mmc_bdops;
md->disk->private_data = md;
md->disk->queue = md->queue.queue;
md->disk->driverfs_dev = &card->dev;
set_disk_ro(md->disk, md->read_only);
md->disk->driverfs_dev = parent;
set_disk_ro(md->disk, md->read_only || default_ro);
/*
* As discussed on lkml, GENHD_FL_REMOVABLE should:
......@@ -636,32 +1052,107 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
*/
snprintf(md->disk->disk_name, sizeof(md->disk->disk_name),
"mmcblk%d", devidx);
"mmcblk%d%s", md->name_idx, subname ? subname : "");
blk_queue_logical_block_size(md->queue.queue, 512);
set_capacity(md->disk, size);
if (mmc_host_cmd23(card->host)) {
if (mmc_card_mmc(card) ||
(mmc_card_sd(card) &&
card->scr.cmds & SD_SCR_CMD23_SUPPORT))
md->flags |= MMC_BLK_CMD23;
}
if (mmc_card_mmc(card) &&
md->flags & MMC_BLK_CMD23 &&
((card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN) ||
card->ext_csd.rel_sectors)) {
md->flags |= MMC_BLK_REL_WR;
blk_queue_flush(md->queue.queue, REQ_FLUSH | REQ_FUA);
}
return md;
err_putdisk:
put_disk(md->disk);
err_kfree:
kfree(md);
out:
return ERR_PTR(ret);
}
static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
{
sector_t size;
struct mmc_blk_data *md;
if (!mmc_card_sd(card) && mmc_card_blockaddr(card)) {
/*
* The EXT_CSD sector count is in number or 512 byte
* sectors.
*/
set_capacity(md->disk, card->ext_csd.sectors);
size = card->ext_csd.sectors;
} else {
/*
* The CSD capacity field is in units of read_blkbits.
* set_capacity takes units of 512 bytes.
*/
set_capacity(md->disk,
card->csd.capacity << (card->csd.read_blkbits - 9));
size = card->csd.capacity << (card->csd.read_blkbits - 9);
}
md = mmc_blk_alloc_req(card, &card->dev, size, false, NULL);
return md;
}
err_putdisk:
put_disk(md->disk);
err_kfree:
kfree(md);
out:
return ERR_PTR(ret);
static int mmc_blk_alloc_part(struct mmc_card *card,
struct mmc_blk_data *md,
unsigned int part_type,
sector_t size,
bool default_ro,
const char *subname)
{
char cap_str[10];
struct mmc_blk_data *part_md;
part_md = mmc_blk_alloc_req(card, disk_to_dev(md->disk), size, default_ro,
subname);
if (IS_ERR(part_md))
return PTR_ERR(part_md);
part_md->part_type = part_type;
list_add(&part_md->part, &md->part);
string_get_size((u64)get_capacity(part_md->disk) << 9, STRING_UNITS_2,
cap_str, sizeof(cap_str));
printk(KERN_INFO "%s: %s %s partition %u %s\n",
part_md->disk->disk_name, mmc_card_id(card),
mmc_card_name(card), part_md->part_type, cap_str);
return 0;
}
static int mmc_blk_alloc_parts(struct mmc_card *card, struct mmc_blk_data *md)
{
int ret = 0;
if (!mmc_card_mmc(card))
return 0;
if (card->ext_csd.boot_size) {
ret = mmc_blk_alloc_part(card, md, EXT_CSD_PART_CONFIG_ACC_BOOT0,
card->ext_csd.boot_size >> 9,
true,
"boot0");
if (ret)
return ret;
ret = mmc_blk_alloc_part(card, md, EXT_CSD_PART_CONFIG_ACC_BOOT1,
card->ext_csd.boot_size >> 9,
true,
"boot1");
if (ret)
return ret;
}
return ret;
}
static int
......@@ -682,9 +1173,81 @@ mmc_blk_set_blksize(struct mmc_blk_data *md, struct mmc_card *card)
return 0;
}
static void mmc_blk_remove_req(struct mmc_blk_data *md)
{
if (md) {
if (md->disk->flags & GENHD_FL_UP) {
device_remove_file(disk_to_dev(md->disk), &md->force_ro);
/* Stop new requests from getting into the queue */
del_gendisk(md->disk);
}
/* Then flush out any already in there */
mmc_cleanup_queue(&md->queue);
mmc_blk_put(md);
}
}
static void mmc_blk_remove_parts(struct mmc_card *card,
struct mmc_blk_data *md)
{
struct list_head *pos, *q;
struct mmc_blk_data *part_md;
__clear_bit(md->name_idx, name_use);
list_for_each_safe(pos, q, &md->part) {
part_md = list_entry(pos, struct mmc_blk_data, part);
list_del(pos);
mmc_blk_remove_req(part_md);
}
}
static int mmc_add_disk(struct mmc_blk_data *md)
{
int ret;
add_disk(md->disk);
md->force_ro.show = force_ro_show;
md->force_ro.store = force_ro_store;
sysfs_attr_init(&md->force_ro.attr);
md->force_ro.attr.name = "force_ro";
md->force_ro.attr.mode = S_IRUGO | S_IWUSR;
ret = device_create_file(disk_to_dev(md->disk), &md->force_ro);
if (ret)
del_gendisk(md->disk);
return ret;
}
static const struct mmc_fixup blk_fixups[] =
{
MMC_FIXUP("SEM02G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38),
MMC_FIXUP("SEM04G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38),
MMC_FIXUP("SEM08G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38),
MMC_FIXUP("SEM16G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38),
MMC_FIXUP("SEM32G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38),
/*
* Some MMC cards experience performance degradation with CMD23
* instead of CMD12-bounded multiblock transfers. For now we'll
* black list what's bad...
* - Certain Toshiba cards.
*
* N.B. This doesn't affect SD cards.
*/
MMC_FIXUP("MMC08G", 0x11, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_BLK_NO_CMD23),
MMC_FIXUP("MMC16G", 0x11, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_BLK_NO_CMD23),
MMC_FIXUP("MMC32G", 0x11, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_BLK_NO_CMD23),
END_FIXUP
};
static int mmc_blk_probe(struct mmc_card *card)
{
struct mmc_blk_data *md;
struct mmc_blk_data *md, *part_md;
int err;
char cap_str[10];
......@@ -708,14 +1271,24 @@ static int mmc_blk_probe(struct mmc_card *card)
md->disk->disk_name, mmc_card_id(card), mmc_card_name(card),
cap_str, md->read_only ? "(ro)" : "");
if (mmc_blk_alloc_parts(card, md))
goto out;
mmc_set_drvdata(card, md);
add_disk(md->disk);
mmc_fixup_device(card, blk_fixups);
if (mmc_add_disk(md))
goto out;
list_for_each_entry(part_md, &md->part, part) {
if (mmc_add_disk(part_md))
goto out;
}
return 0;
out:
mmc_cleanup_queue(&md->queue);
mmc_blk_put(md);
mmc_blk_remove_parts(card, md);
mmc_blk_remove_req(md);
return err;
}
......@@ -723,36 +1296,43 @@ static void mmc_blk_remove(struct mmc_card *card)
{
struct mmc_blk_data *md = mmc_get_drvdata(card);
if (md) {
/* Stop new requests from getting into the queue */
del_gendisk(md->disk);
/* Then flush out any already in there */
mmc_cleanup_queue(&md->queue);
mmc_blk_put(md);
}
mmc_blk_remove_parts(card, md);
mmc_blk_remove_req(md);
mmc_set_drvdata(card, NULL);
}
#ifdef CONFIG_PM
static int mmc_blk_suspend(struct mmc_card *card, pm_message_t state)
{
struct mmc_blk_data *part_md;
struct mmc_blk_data *md = mmc_get_drvdata(card);
if (md) {
mmc_queue_suspend(&md->queue);
list_for_each_entry(part_md, &md->part, part) {
mmc_queue_suspend(&part_md->queue);
}
}
return 0;
}
static int mmc_blk_resume(struct mmc_card *card)
{
struct mmc_blk_data *part_md;
struct mmc_blk_data *md = mmc_get_drvdata(card);
if (md) {
mmc_blk_set_blksize(md, card);
/*
* Resume involves the card going into idle state,
* so current partition is always the main one.
*/
md->part_curr = md->part_type;
mmc_queue_resume(&md->queue);
list_for_each_entry(part_md, &md->part, part) {
mmc_queue_resume(&part_md->queue);
}
}
return 0;
}
......
drivers/mmc/card/mmc_test.c
View file @ 8c1c77ff
......@@ -212,7 +212,7 @@ static int mmc_test_busy(struct mmc_command *cmd)
static int mmc_test_wait_busy(struct mmc_test_card *test)
{
int ret, busy;
struct mmc_command cmd;
struct mmc_command cmd = {0};
busy = 0;
do {
......@@ -246,18 +246,13 @@ static int mmc_test_buffer_transfer(struct mmc_test_card *test,
{
int ret;
struct mmc_request mrq;
struct mmc_command cmd;
struct mmc_command stop;
struct mmc_data data;
struct mmc_request mrq = {0};
struct mmc_command cmd = {0};
struct mmc_command stop = {0};
struct mmc_data data = {0};
struct scatterlist sg;
memset(&mrq, 0, sizeof(struct mmc_request));
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
memset(&stop, 0, sizeof(struct mmc_command));
mrq.cmd = &cmd;
mrq.data = &data;
mrq.stop = &stop;
......@@ -731,15 +726,10 @@ static int mmc_test_simple_transfer(struct mmc_test_card *test,
struct scatterlist *sg, unsigned sg_len, unsigned dev_addr,
unsigned blocks, unsigned blksz, int write)
{
struct mmc_request mrq;
struct mmc_command cmd;
struct mmc_command stop;
struct mmc_data data;
memset(&mrq, 0, sizeof(struct mmc_request));
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
memset(&stop, 0, sizeof(struct mmc_command));
struct mmc_request mrq = {0};
struct mmc_command cmd = {0};
struct mmc_command stop = {0};
struct mmc_data data = {0};
mrq.cmd = &cmd;
mrq.data = &data;
......@@ -761,18 +751,13 @@ static int mmc_test_simple_transfer(struct mmc_test_card *test,
static int mmc_test_broken_transfer(struct mmc_test_card *test,
unsigned blocks, unsigned blksz, int write)
{
struct mmc_request mrq;
struct mmc_command cmd;
struct mmc_command stop;
struct mmc_data data;
struct mmc_request mrq = {0};
struct mmc_command cmd = {0};
struct mmc_command stop = {0};
struct mmc_data data = {0};
struct scatterlist sg;
memset(&mrq, 0, sizeof(struct mmc_request));
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
memset(&stop, 0, sizeof(struct mmc_command));
mrq.cmd = &cmd;
mrq.data = &data;
mrq.stop = &stop;
......@@ -1401,8 +1386,9 @@ static int mmc_test_area_io(struct mmc_test_card *test, unsigned long sz,
*/
static int mmc_test_area_fill(struct mmc_test_card *test)
{
return mmc_test_area_io(test, test->area.max_tfr, test->area.dev_addr,
1, 0, 0);
struct mmc_test_area *t = &test->area;
return mmc_test_area_io(test, t->max_tfr, t->dev_addr, 1, 0, 0);
}
/*
......@@ -1415,7 +1401,7 @@ static int mmc_test_area_erase(struct mmc_test_card *test)
if (!mmc_can_erase(test->card))
return 0;
return mmc_erase(test->card, t->dev_addr, test->area.max_sz >> 9,
return mmc_erase(test->card, t->dev_addr, t->max_sz >> 9,
MMC_ERASE_ARG);
}
......@@ -1542,8 +1528,10 @@ static int mmc_test_area_prepare_fill(struct mmc_test_card *test)
static int mmc_test_best_performance(struct mmc_test_card *test, int write,
int max_scatter)
{
return mmc_test_area_io(test, test->area.max_tfr, test->area.dev_addr,
write, max_scatter, 1);
struct mmc_test_area *t = &test->area;
return mmc_test_area_io(test, t->max_tfr, t->dev_addr, write,
max_scatter, 1);
}
/*
......@@ -1583,18 +1571,19 @@ static int mmc_test_best_write_perf_max_scatter(struct mmc_test_card *test)
*/
static int mmc_test_profile_read_perf(struct mmc_test_card *test)
{
struct mmc_test_area *t = &test->area;
unsigned long sz;
unsigned int dev_addr;
int ret;
for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
dev_addr = test->area.dev_addr + (sz >> 9);
for (sz = 512; sz < t->max_tfr; sz <<= 1) {
dev_addr = t->dev_addr + (sz >> 9);
ret = mmc_test_area_io(test, sz, dev_addr, 0, 0, 1);
if (ret)
return ret;
}
sz = test->area.max_tfr;
dev_addr = test->area.dev_addr;
sz = t->max_tfr;
dev_addr = t->dev_addr;
return mmc_test_area_io(test, sz, dev_addr, 0, 0, 1);
}
......@@ -1603,6 +1592,7 @@ static int mmc_test_profile_read_perf(struct mmc_test_card *test)
*/
static int mmc_test_profile_write_perf(struct mmc_test_card *test)
{
struct mmc_test_area *t = &test->area;
unsigned long sz;
unsigned int dev_addr;
int ret;
......@@ -1610,8 +1600,8 @@ static int mmc_test_profile_write_perf(struct mmc_test_card *test)
ret = mmc_test_area_erase(test);
if (ret)
return ret;
for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
dev_addr = test->area.dev_addr + (sz >> 9);
for (sz = 512; sz < t->max_tfr; sz <<= 1) {
dev_addr = t->dev_addr + (sz >> 9);
ret = mmc_test_area_io(test, sz, dev_addr, 1, 0, 1);
if (ret)
return ret;
......@@ -1619,8 +1609,8 @@ static int mmc_test_profile_write_perf(struct mmc_test_card *test)
ret = mmc_test_area_erase(test);
if (ret)
return ret;
sz = test->area.max_tfr;
dev_addr = test->area.dev_addr;
sz = t->max_tfr;
dev_addr = t->dev_addr;
return mmc_test_area_io(test, sz, dev_addr, 1, 0, 1);
}
......@@ -1629,6 +1619,7 @@ static int mmc_test_profile_write_perf(struct mmc_test_card *test)
*/
static int mmc_test_profile_trim_perf(struct mmc_test_card *test)
{
struct mmc_test_area *t = &test->area;
unsigned long sz;
unsigned int dev_addr;
struct timespec ts1, ts2;
......@@ -1640,8 +1631,8 @@ static int mmc_test_profile_trim_perf(struct mmc_test_card *test)
if (!mmc_can_erase(test->card))
return RESULT_UNSUP_HOST;
for (sz = 512; sz < test->area.max_sz; sz <<= 1) {
dev_addr = test->area.dev_addr + (sz >> 9);
for (sz = 512; sz < t->max_sz; sz <<= 1) {
dev_addr = t->dev_addr + (sz >> 9);
getnstimeofday(&ts1);
ret = mmc_erase(test->card, dev_addr, sz >> 9, MMC_TRIM_ARG);
if (ret)
......@@ -1649,7 +1640,7 @@ static int mmc_test_profile_trim_perf(struct mmc_test_card *test)
getnstimeofday(&ts2);
mmc_test_print_rate(test, sz, &ts1, &ts2);
}
dev_addr = test->area.dev_addr;
dev_addr = t->dev_addr;
getnstimeofday(&ts1);
ret = mmc_erase(test->card, dev_addr, sz >> 9, MMC_TRIM_ARG);
if (ret)
......@@ -1661,12 +1652,13 @@ static int mmc_test_profile_trim_perf(struct mmc_test_card *test)
static int mmc_test_seq_read_perf(struct mmc_test_card *test, unsigned long sz)
{
struct mmc_test_area *t = &test->area;
unsigned int dev_addr, i, cnt;
struct timespec ts1, ts2;
int ret;
cnt = test->area.max_sz / sz;
dev_addr = test->area.dev_addr;
cnt = t->max_sz / sz;
dev_addr = t->dev_addr;
getnstimeofday(&ts1);
for (i = 0; i < cnt; i++) {
ret = mmc_test_area_io(test, sz, dev_addr, 0, 0, 0);
......@@ -1684,20 +1676,22 @@ static int mmc_test_seq_read_perf(struct mmc_test_card *test, unsigned long sz)
*/
static int mmc_test_profile_seq_read_perf(struct mmc_test_card *test)
{
struct mmc_test_area *t = &test->area;
unsigned long sz;
int ret;
for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
for (sz = 512; sz < t->max_tfr; sz <<= 1) {
ret = mmc_test_seq_read_perf(test, sz);
if (ret)
return ret;
}
sz = test->area.max_tfr;
sz = t->max_tfr;
return mmc_test_seq_read_perf(test, sz);
}
static int mmc_test_seq_write_perf(struct mmc_test_card *test, unsigned long sz)
{
struct mmc_test_area *t = &test->area;
unsigned int dev_addr, i, cnt;
struct timespec ts1, ts2;
int ret;
......@@ -1705,8 +1699,8 @@ static int mmc_test_seq_write_perf(struct mmc_test_card *test, unsigned long sz)
ret = mmc_test_area_erase(test);
if (ret)
return ret;
cnt = test->area.max_sz / sz;
dev_addr = test->area.dev_addr;
cnt = t->max_sz / sz;
dev_addr = t->dev_addr;
getnstimeofday(&ts1);
for (i = 0; i < cnt; i++) {
ret = mmc_test_area_io(test, sz, dev_addr, 1, 0, 0);
......@@ -1724,15 +1718,16 @@ static int mmc_test_seq_write_perf(struct mmc_test_card *test, unsigned long sz)
*/
static int mmc_test_profile_seq_write_perf(struct mmc_test_card *test)
{
struct mmc_test_area *t = &test->area;
unsigned long sz;
int ret;
for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
for (sz = 512; sz < t->max_tfr; sz <<= 1) {
ret = mmc_test_seq_write_perf(test, sz);
if (ret)
return ret;
}
sz = test->area.max_tfr;
sz = t->max_tfr;
return mmc_test_seq_write_perf(test, sz);
}
......@@ -1741,6 +1736,7 @@ static int mmc_test_profile_seq_write_perf(struct mmc_test_card *test)
*/
static int mmc_test_profile_seq_trim_perf(struct mmc_test_card *test)
{
struct mmc_test_area *t = &test->area;
unsigned long sz;
unsigned int dev_addr, i, cnt;
struct timespec ts1, ts2;
......@@ -1752,15 +1748,15 @@ static int mmc_test_profile_seq_trim_perf(struct mmc_test_card *test)
if (!mmc_can_erase(test->card))
return RESULT_UNSUP_HOST;
for (sz = 512; sz <= test->area.max_sz; sz <<= 1) {
for (sz = 512; sz <= t->max_sz; sz <<= 1) {
ret = mmc_test_area_erase(test);
if (ret)
return ret;
ret = mmc_test_area_fill(test);
if (ret)
return ret;
cnt = test->area.max_sz / sz;
dev_addr = test->area.dev_addr;
cnt = t->max_sz / sz;
dev_addr = t->dev_addr;
getnstimeofday(&ts1);
for (i = 0; i < cnt; i++) {
ret = mmc_erase(test->card, dev_addr, sz >> 9,
......@@ -1823,11 +1819,12 @@ static int mmc_test_rnd_perf(struct mmc_test_card *test, int write, int print,
static int mmc_test_random_perf(struct mmc_test_card *test, int write)
{
struct mmc_test_area *t = &test->area;
unsigned int next;
unsigned long sz;
int ret;
for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
for (sz = 512; sz < t->max_tfr; sz <<= 1) {
/*
* When writing, try to get more consistent results by running
* the test twice with exactly the same I/O but outputting the
......@@ -1844,7 +1841,7 @@ static int mmc_test_random_perf(struct mmc_test_card *test, int write)
if (ret)
return ret;
}
sz = test->area.max_tfr;
sz = t->max_tfr;
if (write) {
next = rnd_next;
ret = mmc_test_rnd_perf(test, write, 0, sz);
......@@ -1874,17 +1871,18 @@ static int mmc_test_random_write_perf(struct mmc_test_card *test)
static int mmc_test_seq_perf(struct mmc_test_card *test, int write,
unsigned int tot_sz, int max_scatter)
{
struct mmc_test_area *t = &test->area;
unsigned int dev_addr, i, cnt, sz, ssz;
struct timespec ts1, ts2;
int ret;
sz = test->area.max_tfr;
sz = t->max_tfr;
/*
* In the case of a maximally scattered transfer, the maximum transfer
* size is further limited by using PAGE_SIZE segments.
*/
if (max_scatter) {
struct mmc_test_area *t = &test->area;
unsigned long max_tfr;
if (t->max_seg_sz >= PAGE_SIZE)
......
drivers/mmc/card/queue.c
View file @ 8c1c77ff
......@@ -343,18 +343,14 @@ unsigned int mmc_queue_map_sg(struct mmc_queue *mq)
*/
void mmc_queue_bounce_pre(struct mmc_queue *mq)
{
unsigned long flags;
if (!mq->bounce_buf)
return;
if (rq_data_dir(mq->req) != WRITE)
return;
local_irq_save(flags);
sg_copy_to_buffer(mq->bounce_sg, mq->bounce_sg_len,
mq->bounce_buf, mq->sg[0].length);
local_irq_restore(flags);
}
/*
......@@ -363,17 +359,13 @@ void mmc_queue_bounce_pre(struct mmc_queue *mq)
*/
void mmc_queue_bounce_post(struct mmc_queue *mq)
{
unsigned long flags;
if (!mq->bounce_buf)
return;
if (rq_data_dir(mq->req) != READ)
return;
local_irq_save(flags);
sg_copy_from_buffer(mq->bounce_sg, mq->bounce_sg_len,
mq->bounce_buf, mq->sg[0].length);
local_irq_restore(flags);
}
drivers/mmc/core/bus.c
View file @ 8c1c77ff
......@@ -274,8 +274,12 @@ int mmc_add_card(struct mmc_card *card)
break;
case MMC_TYPE_SD:
type = "SD";
if (mmc_card_blockaddr(card))
type = "SDHC";
if (mmc_card_blockaddr(card)) {
if (mmc_card_ext_capacity(card))
type = "SDXC";
else
type = "SDHC";
}
break;
case MMC_TYPE_SDIO:
type = "SDIO";
......@@ -299,7 +303,8 @@ int mmc_add_card(struct mmc_card *card)
} else {
printk(KERN_INFO "%s: new %s%s%s card at address %04x\n",
mmc_hostname(card->host),
mmc_card_highspeed(card) ? "high speed " : "",
mmc_sd_card_uhs(card) ? "ultra high speed " :
(mmc_card_highspeed(card) ? "high speed " : ""),
mmc_card_ddr_mode(card) ? "DDR " : "",
type, card->rca);
}
......
drivers/mmc/core/core.c
View file @ 8c1c77ff
......@@ -236,12 +236,10 @@ EXPORT_SYMBOL(mmc_wait_for_req);
*/
int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd, int retries)
{
struct mmc_request mrq;
struct mmc_request mrq = {0};
WARN_ON(!host->claimed);
memset(&mrq, 0, sizeof(struct mmc_request));
memset(cmd->resp, 0, sizeof(cmd->resp));
cmd->retries = retries;
......@@ -719,23 +717,13 @@ void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode)
mmc_set_ios(host);
}
/*
* Change data bus width and DDR mode of a host.
*/
void mmc_set_bus_width_ddr(struct mmc_host *host, unsigned int width,
unsigned int ddr)
{
host->ios.bus_width = width;
host->ios.ddr = ddr;
mmc_set_ios(host);
}
/*
* Change data bus width of a host.
*/
void mmc_set_bus_width(struct mmc_host *host, unsigned int width)
{
mmc_set_bus_width_ddr(host, width, MMC_SDR_MODE);
host->ios.bus_width = width;
mmc_set_ios(host);
}
/**
......@@ -944,6 +932,38 @@ u32 mmc_select_voltage(struct mmc_host *host, u32 ocr)
return ocr;
}
int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, bool cmd11)
{
struct mmc_command cmd = {0};
int err = 0;
BUG_ON(!host);
/*
* Send CMD11 only if the request is to switch the card to
* 1.8V signalling.
*/
if ((signal_voltage != MMC_SIGNAL_VOLTAGE_330) && cmd11) {
cmd.opcode = SD_SWITCH_VOLTAGE;
cmd.arg = 0;
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
err = mmc_wait_for_cmd(host, &cmd, 0);
if (err)
return err;
if (!mmc_host_is_spi(host) && (cmd.resp[0] & R1_ERROR))
return -EIO;
}
host->ios.signal_voltage = signal_voltage;
if (host->ops->start_signal_voltage_switch)
err = host->ops->start_signal_voltage_switch(host, &host->ios);
return err;
}
/*
* Select timing parameters for host.
*/
......@@ -953,6 +973,15 @@ void mmc_set_timing(struct mmc_host *host, unsigned int timing)
mmc_set_ios(host);
}
/*
* Select appropriate driver type for host.
*/
void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type)
{
host->ios.drv_type = drv_type;
mmc_set_ios(host);
}
/*
* Apply power to the MMC stack. This is a two-stage process.
* First, we enable power to the card without the clock running.
......@@ -1187,9 +1216,8 @@ void mmc_init_erase(struct mmc_card *card)
}
}
static void mmc_set_mmc_erase_timeout(struct mmc_card *card,
struct mmc_command *cmd,
unsigned int arg, unsigned int qty)
static unsigned int mmc_mmc_erase_timeout(struct mmc_card *card,
unsigned int arg, unsigned int qty)
{
unsigned int erase_timeout;
......@@ -1246,44 +1274,48 @@ static void mmc_set_mmc_erase_timeout(struct mmc_card *card,
if (mmc_host_is_spi(card->host) && erase_timeout < 1000)
erase_timeout = 1000;
cmd->erase_timeout = erase_timeout;
return erase_timeout;
}
static void mmc_set_sd_erase_timeout(struct mmc_card *card,
struct mmc_command *cmd, unsigned int arg,
unsigned int qty)
static unsigned int mmc_sd_erase_timeout(struct mmc_card *card,
unsigned int arg,
unsigned int qty)
{
unsigned int erase_timeout;
if (card->ssr.erase_timeout) {
/* Erase timeout specified in SD Status Register (SSR) */
cmd->erase_timeout = card->ssr.erase_timeout * qty +
card->ssr.erase_offset;
erase_timeout = card->ssr.erase_timeout * qty +
card->ssr.erase_offset;
} else {
/*
* Erase timeout not specified in SD Status Register (SSR) so
* use 250ms per write block.
*/
cmd->erase_timeout = 250 * qty;
erase_timeout = 250 * qty;
}
/* Must not be less than 1 second */
if (cmd->erase_timeout < 1000)
cmd->erase_timeout = 1000;
if (erase_timeout < 1000)
erase_timeout = 1000;
return erase_timeout;
}
static void mmc_set_erase_timeout(struct mmc_card *card,
struct mmc_command *cmd, unsigned int arg,
unsigned int qty)
static unsigned int mmc_erase_timeout(struct mmc_card *card,
unsigned int arg,
unsigned int qty)
{
if (mmc_card_sd(card))
mmc_set_sd_erase_timeout(card, cmd, arg, qty);
return mmc_sd_erase_timeout(card, arg, qty);
else
mmc_set_mmc_erase_timeout(card, cmd, arg, qty);
return mmc_mmc_erase_timeout(card, arg, qty);
}
static int mmc_do_erase(struct mmc_card *card, unsigned int from,
unsigned int to, unsigned int arg)
{
struct mmc_command cmd;
struct mmc_command cmd = {0};
unsigned int qty = 0;
int err;
......@@ -1317,7 +1349,6 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
to <<= 9;
}
memset(&cmd, 0, sizeof(struct mmc_command));
if (mmc_card_sd(card))
cmd.opcode = SD_ERASE_WR_BLK_START;
else
......@@ -1351,7 +1382,7 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
cmd.opcode = MMC_ERASE;
cmd.arg = arg;
cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
mmc_set_erase_timeout(card, &cmd, arg, qty);
cmd.cmd_timeout_ms = mmc_erase_timeout(card, arg, qty);
err = mmc_wait_for_cmd(card->host, &cmd, 0);
if (err) {
printk(KERN_ERR "mmc_erase: erase error %d, status %#x\n",
......@@ -1487,12 +1518,11 @@ EXPORT_SYMBOL(mmc_erase_group_aligned);
int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen)
{
struct mmc_command cmd;
struct mmc_command cmd = {0};
if (mmc_card_blockaddr(card) || mmc_card_ddr_mode(card))
return 0;
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SET_BLOCKLEN;
cmd.arg = blocklen;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
......@@ -1578,7 +1608,7 @@ void mmc_rescan(struct work_struct *work)
for (i = 0; i < ARRAY_SIZE(freqs); i++) {
if (!mmc_rescan_try_freq(host, max(freqs[i], host->f_min)))
break;
if (freqs[i] < host->f_min)
if (freqs[i] <= host->f_min)
break;
}
mmc_release_host(host);
......@@ -1746,7 +1776,7 @@ int mmc_suspend_host(struct mmc_host *host)
}
mmc_bus_put(host);
if (!err && !(host->pm_flags & MMC_PM_KEEP_POWER))
if (!err && !mmc_card_keep_power(host))
mmc_power_off(host);
return err;
......@@ -1764,7 +1794,7 @@ int mmc_resume_host(struct mmc_host *host)
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
if (!(host->pm_flags & MMC_PM_KEEP_POWER)) {
if (!mmc_card_keep_power(host)) {
mmc_power_up(host);
mmc_select_voltage(host, host->ocr);
/*
......@@ -1789,6 +1819,7 @@ int mmc_resume_host(struct mmc_host *host)
err = 0;
}
}
host->pm_flags &= ~MMC_PM_KEEP_POWER;
mmc_bus_put(host);
return err;
......
drivers/mmc/core/core.h
View file @ 8c1c77ff
......@@ -38,10 +38,11 @@ void mmc_ungate_clock(struct mmc_host *host);
void mmc_set_ungated(struct mmc_host *host);
void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
void mmc_set_bus_width_ddr(struct mmc_host *host, unsigned int width,
unsigned int ddr);
u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage,
bool cmd11);
void mmc_set_timing(struct mmc_host *host, unsigned int timing);
void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
static inline void mmc_delay(unsigned int ms)
{
......@@ -61,8 +62,6 @@ int mmc_attach_mmc(struct mmc_host *host);
int mmc_attach_sd(struct mmc_host *host);
int mmc_attach_sdio(struct mmc_host *host);
void mmc_fixup_device(struct mmc_card *card);
/* Module parameters */
extern int use_spi_crc;
......
drivers/mmc/core/host.c
View file @ 8c1c77ff
......@@ -325,12 +325,12 @@ int mmc_add_host(struct mmc_host *host)
WARN_ON((host->caps & MMC_CAP_SDIO_IRQ) &&
!host->ops->enable_sdio_irq);
led_trigger_register_simple(dev_name(&host->class_dev), &host->led);
err = device_add(&host->class_dev);
if (err)
return err;
led_trigger_register_simple(dev_name(&host->class_dev), &host->led);
#ifdef CONFIG_DEBUG_FS
mmc_add_host_debugfs(host);
#endif
......
drivers/mmc/core/mmc.c
View file @ 8c1c77ff
......@@ -20,6 +20,7 @@
#include "core.h"
#include "bus.h"
#include "mmc_ops.h"
#include "sd_ops.h"
static const unsigned int tran_exp[] = {
10000, 100000, 1000000, 10000000,
......@@ -173,14 +174,17 @@ static int mmc_decode_csd(struct mmc_card *card)
}
/*
* Read and decode extended CSD.
* Read extended CSD.
*/
static int mmc_read_ext_csd(struct mmc_card *card)
static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd)
{
int err;
u8 *ext_csd;
BUG_ON(!card);
BUG_ON(!new_ext_csd);
*new_ext_csd = NULL;
if (card->csd.mmca_vsn < CSD_SPEC_VER_4)
return 0;
......@@ -198,12 +202,15 @@ static int mmc_read_ext_csd(struct mmc_card *card)
err = mmc_send_ext_csd(card, ext_csd);
if (err) {
kfree(ext_csd);
*new_ext_csd = NULL;
/* If the host or the card can't do the switch,
* fail more gracefully. */
if ((err != -EINVAL)
&& (err != -ENOSYS)
&& (err != -EFAULT))
goto out;
return err;
/*
* High capacity cards should have this "magic" size
......@@ -221,9 +228,23 @@ static int mmc_read_ext_csd(struct mmc_card *card)
mmc_hostname(card->host));
err = 0;
}
} else
*new_ext_csd = ext_csd;
goto out;
}
return err;
}
/*
* Decode extended CSD.
*/
static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
{
int err = 0;
BUG_ON(!card);
if (!ext_csd)
return 0;
/* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */
if (card->csd.structure == 3) {
......@@ -288,6 +309,10 @@ static int mmc_read_ext_csd(struct mmc_card *card)
if (card->ext_csd.rev >= 3) {
u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG];
/* EXT_CSD value is in units of 10ms, but we store in ms */
card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME];
/* Sleep / awake timeout in 100ns units */
if (sa_shift > 0 && sa_shift <= 0x17)
......@@ -299,6 +324,14 @@ static int mmc_read_ext_csd(struct mmc_card *card)
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.hc_erase_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10;
card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C];
/*
* There are two boot regions of equal size, defined in
* multiples of 128K.
*/
card->ext_csd.boot_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
}
if (card->ext_csd.rev >= 4) {
......@@ -350,14 +383,78 @@ static int mmc_read_ext_csd(struct mmc_card *card)
ext_csd[EXT_CSD_TRIM_MULT];
}
if (card->ext_csd.rev >= 5)
card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
if (ext_csd[EXT_CSD_ERASED_MEM_CONT])
card->erased_byte = 0xFF;
else
card->erased_byte = 0x0;
out:
return err;
}
static inline void mmc_free_ext_csd(u8 *ext_csd)
{
kfree(ext_csd);
}
static int mmc_compare_ext_csds(struct mmc_card *card, u8 *ext_csd,
unsigned bus_width)
{
u8 *bw_ext_csd;
int err;
err = mmc_get_ext_csd(card, &bw_ext_csd);
if (err)
return err;
if ((ext_csd == NULL || bw_ext_csd == NULL)) {
if (bus_width != MMC_BUS_WIDTH_1)
err = -EINVAL;
goto out;
}
if (bus_width == MMC_BUS_WIDTH_1)
goto out;
/* only compare read only fields */
err = (!(ext_csd[EXT_CSD_PARTITION_SUPPORT] ==
bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) &&
(ext_csd[EXT_CSD_ERASED_MEM_CONT] ==
bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) &&
(ext_csd[EXT_CSD_REV] ==
bw_ext_csd[EXT_CSD_REV]) &&
(ext_csd[EXT_CSD_STRUCTURE] ==
bw_ext_csd[EXT_CSD_STRUCTURE]) &&
(ext_csd[EXT_CSD_CARD_TYPE] ==
bw_ext_csd[EXT_CSD_CARD_TYPE]) &&
(ext_csd[EXT_CSD_S_A_TIMEOUT] ==
bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) &&
(ext_csd[EXT_CSD_HC_WP_GRP_SIZE] ==
bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) &&
(ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT] ==
bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) &&
(ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] ==
bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) &&
(ext_csd[EXT_CSD_SEC_TRIM_MULT] ==
bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) &&
(ext_csd[EXT_CSD_SEC_ERASE_MULT] ==
bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) &&
(ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT] ==
bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) &&
(ext_csd[EXT_CSD_TRIM_MULT] ==
bw_ext_csd[EXT_CSD_TRIM_MULT]) &&
memcmp(&ext_csd[EXT_CSD_SEC_CNT],
&bw_ext_csd[EXT_CSD_SEC_CNT],
4) != 0);
if (err)
err = -EINVAL;
out:
mmc_free_ext_csd(bw_ext_csd);
return err;
}
......@@ -422,6 +519,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
u32 cid[4];
unsigned int max_dtr;
u32 rocr;
u8 *ext_csd = NULL;
BUG_ON(!host);
WARN_ON(!host->claimed);
......@@ -520,7 +618,11 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
/*
* Fetch and process extended CSD.
*/
err = mmc_read_ext_csd(card);
err = mmc_get_ext_csd(card, &ext_csd);
if (err)
goto free_card;
err = mmc_read_ext_csd(card, ext_csd);
if (err)
goto free_card;
......@@ -542,7 +644,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
*/
if (card->ext_csd.enhanced_area_en) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_ERASE_GROUP_DEF, 1);
EXT_CSD_ERASE_GROUP_DEF, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
......@@ -567,13 +669,25 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
}
}
/*
* Ensure eMMC user default partition is enabled
*/
if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) {
card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG,
card->ext_csd.part_config,
card->ext_csd.part_time);
if (err && err != -EBADMSG)
goto free_card;
}
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1);
EXT_CSD_HS_TIMING, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
......@@ -606,10 +720,14 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
*/
if (mmc_card_highspeed(card)) {
if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V)
&& (host->caps & (MMC_CAP_1_8V_DDR)))
&& ((host->caps & (MMC_CAP_1_8V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_8V_DDR_MODE;
else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)
&& (host->caps & (MMC_CAP_1_2V_DDR)))
&& ((host->caps & (MMC_CAP_1_2V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_2V_DDR_MODE;
}
......@@ -640,18 +758,22 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
ddr = 0; /* no DDR for 1-bit width */
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][0]);
ext_csd_bits[idx][0],
0);
if (!err) {
mmc_set_bus_width_ddr(card->host,
bus_width, MMC_SDR_MODE);
mmc_set_bus_width(card->host, bus_width);
/*
* If controller can't handle bus width test,
* use the highest bus width to maintain
* compatibility with previous MMC behavior.
* compare ext_csd previously read in 1 bit mode
* against ext_csd at new bus width
*/
if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST))
break;
err = mmc_bus_test(card, bus_width);
err = mmc_compare_ext_csds(card,
ext_csd,
bus_width);
else
err = mmc_bus_test(card, bus_width);
if (!err)
break;
}
......@@ -659,8 +781,9 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if (!err && ddr) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][1]);
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][1],
0);
}
if (err) {
printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
......@@ -668,20 +791,43 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
1 << bus_width, ddr);
goto free_card;
} else if (ddr) {
/*
* eMMC cards can support 3.3V to 1.2V i/o (vccq)
* signaling.
*
* EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq.
*
* 1.8V vccq at 3.3V core voltage (vcc) is not required
* in the JEDEC spec for DDR.
*
* Do not force change in vccq since we are obviously
* working and no change to vccq is needed.
*
* WARNING: eMMC rules are NOT the same as SD DDR
*/
if (ddr == EXT_CSD_CARD_TYPE_DDR_1_2V) {
err = mmc_set_signal_voltage(host,
MMC_SIGNAL_VOLTAGE_120, 0);
if (err)
goto err;
}
mmc_card_set_ddr_mode(card);
mmc_set_bus_width_ddr(card->host, bus_width, ddr);
mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50);
mmc_set_bus_width(card->host, bus_width);
}
}
if (!oldcard)
host->card = card;
mmc_free_ext_csd(ext_csd);
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
mmc_free_ext_csd(ext_csd);
return err;
}
......
drivers/mmc/core/mmc_ops.c
View file @ 8c1c77ff
......@@ -23,12 +23,10 @@
static int _mmc_select_card(struct mmc_host *host, struct mmc_card *card)
{
int err;
struct mmc_command cmd;
struct mmc_command cmd = {0};
BUG_ON(!host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SELECT_CARD;
if (card) {
......@@ -60,15 +58,13 @@ int mmc_deselect_cards(struct mmc_host *host)
int mmc_card_sleepawake(struct mmc_host *host, int sleep)
{
struct mmc_command cmd;
struct mmc_command cmd = {0};
struct mmc_card *card = host->card;
int err;
if (sleep)
mmc_deselect_cards(host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SLEEP_AWAKE;
cmd.arg = card->rca << 16;
if (sleep)
......@@ -97,7 +93,7 @@ int mmc_card_sleepawake(struct mmc_host *host, int sleep)
int mmc_go_idle(struct mmc_host *host)
{
int err;
struct mmc_command cmd;
struct mmc_command cmd = {0};
/*
* Non-SPI hosts need to prevent chipselect going active during
......@@ -113,8 +109,6 @@ int mmc_go_idle(struct mmc_host *host)
mmc_delay(1);
}
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_GO_IDLE_STATE;
cmd.arg = 0;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_NONE | MMC_CMD_BC;
......@@ -135,13 +129,11 @@ int mmc_go_idle(struct mmc_host *host)
int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
{
struct mmc_command cmd;
struct mmc_command cmd = {0};
int i, err = 0;
BUG_ON(!host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SEND_OP_COND;
cmd.arg = mmc_host_is_spi(host) ? 0 : ocr;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR;
......@@ -178,13 +170,11 @@ int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
int mmc_all_send_cid(struct mmc_host *host, u32 *cid)
{
int err;
struct mmc_command cmd;
struct mmc_command cmd = {0};
BUG_ON(!host);
BUG_ON(!cid);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_ALL_SEND_CID;
cmd.arg = 0;
cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
......@@ -201,13 +191,11 @@ int mmc_all_send_cid(struct mmc_host *host, u32 *cid)
int mmc_set_relative_addr(struct mmc_card *card)
{
int err;
struct mmc_command cmd;
struct mmc_command cmd = {0};
BUG_ON(!card);
BUG_ON(!card->host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SET_RELATIVE_ADDR;
cmd.arg = card->rca << 16;
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
......@@ -223,13 +211,11 @@ static int
mmc_send_cxd_native(struct mmc_host *host, u32 arg, u32 *cxd, int opcode)
{
int err;
struct mmc_command cmd;
struct mmc_command cmd = {0};
BUG_ON(!host);
BUG_ON(!cxd);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = opcode;
cmd.arg = arg;
cmd.flags = MMC_RSP_R2 | MMC_CMD_AC;
......@@ -247,9 +233,9 @@ static int
mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
u32 opcode, void *buf, unsigned len)
{
struct mmc_request mrq;
struct mmc_command cmd;
struct mmc_data data;
struct mmc_request mrq = {0};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
void *data_buf;
......@@ -260,10 +246,6 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
if (data_buf == NULL)
return -ENOMEM;
memset(&mrq, 0, sizeof(struct mmc_request));
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
......@@ -355,11 +337,9 @@ int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd)
int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp)
{
struct mmc_command cmd;
struct mmc_command cmd = {0};
int err;
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SPI_READ_OCR;
cmd.arg = highcap ? (1 << 30) : 0;
cmd.flags = MMC_RSP_SPI_R3;
......@@ -372,11 +352,9 @@ int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp)
int mmc_spi_set_crc(struct mmc_host *host, int use_crc)
{
struct mmc_command cmd;
struct mmc_command cmd = {0};
int err;
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SPI_CRC_ON_OFF;
cmd.flags = MMC_RSP_SPI_R1;
cmd.arg = use_crc;
......@@ -387,23 +365,34 @@ int mmc_spi_set_crc(struct mmc_host *host, int use_crc)
return err;
}
int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value)
/**
* mmc_switch - modify EXT_CSD register
* @card: the MMC card associated with the data transfer
* @set: cmd set values
* @index: EXT_CSD register index
* @value: value to program into EXT_CSD register
* @timeout_ms: timeout (ms) for operation performed by register write,
* timeout of zero implies maximum possible timeout
*
* Modifies the EXT_CSD register for selected card.
*/
int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
unsigned int timeout_ms)
{
int err;
struct mmc_command cmd;
struct mmc_command cmd = {0};
u32 status;
BUG_ON(!card);
BUG_ON(!card->host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SWITCH;
cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
(index << 16) |
(value << 8) |
set;
cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
cmd.cmd_timeout_ms = timeout_ms;
err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
if (err)
......@@ -433,17 +422,16 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value)
return 0;
}
EXPORT_SYMBOL_GPL(mmc_switch);
int mmc_send_status(struct mmc_card *card, u32 *status)
{
int err;
struct mmc_command cmd;
struct mmc_command cmd = {0};
BUG_ON(!card);
BUG_ON(!card->host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SEND_STATUS;
if (!mmc_host_is_spi(card->host))
cmd.arg = card->rca << 16;
......@@ -466,9 +454,9 @@ static int
mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode,
u8 len)
{
struct mmc_request mrq;
struct mmc_command cmd;
struct mmc_data data;
struct mmc_request mrq = {0};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
u8 *data_buf;
u8 *test_buf;
......@@ -497,10 +485,6 @@ mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode,
if (opcode == MMC_BUS_TEST_W)
memcpy(data_buf, test_buf, len);
memset(&mrq, 0, sizeof(struct mmc_request));
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
cmd.opcode = opcode;
......
drivers/mmc/core/mmc_ops.h
View file @ 8c1c77ff
......@@ -20,7 +20,6 @@ int mmc_all_send_cid(struct mmc_host *host, u32 *cid);
int mmc_set_relative_addr(struct mmc_card *card);
int mmc_send_csd(struct mmc_card *card, u32 *csd);
int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd);
int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value);
int mmc_send_status(struct mmc_card *card, u32 *status);
int mmc_send_cid(struct mmc_host *host, u32 *cid);
int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
......
drivers/mmc/core/quirks.c
View file @ 8c1c77ff
/*
* This file contains work-arounds for many known sdio hardware
* bugs.
* This file contains work-arounds for many known SD/MMC
* and SDIO hardware bugs.
*
* Copyright (c) 2011 Andrei Warkentin <andreiw@motorola.com>
* Copyright (c) 2011 Pierre Tardy <tardyp@gmail.com>
* Inspired from pci fixup code:
* Copyright (c) 1999 Martin Mares <mj@ucw.cz>
......@@ -11,34 +12,14 @@
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mmc/card.h>
#include <linux/mod_devicetable.h>
/*
* The world is not perfect and supplies us with broken mmc/sdio devices.
* For at least a part of these bugs we need a work-around
*/
struct mmc_fixup {
u16 vendor, device; /* You can use SDIO_ANY_ID here of course */
void (*vendor_fixup)(struct mmc_card *card, int data);
int data;
};
/*
* This hook just adds a quirk unconditionnally
*/
static void __maybe_unused add_quirk(struct mmc_card *card, int data)
{
card->quirks |= data;
}
#ifndef SDIO_VENDOR_ID_TI
#define SDIO_VENDOR_ID_TI 0x0097
#endif
/*
* This hook just removes a quirk unconditionnally
*/
static void __maybe_unused remove_quirk(struct mmc_card *card, int data)
{
card->quirks &= ~data;
}
#ifndef SDIO_DEVICE_ID_TI_WL1271
#define SDIO_DEVICE_ID_TI_WL1271 0x4076
#endif
/*
* This hook just adds a quirk for all sdio devices
......@@ -49,33 +30,47 @@ static void add_quirk_for_sdio_devices(struct mmc_card *card, int data)
card->quirks |= data;
}
#ifndef SDIO_VENDOR_ID_TI
#define SDIO_VENDOR_ID_TI 0x0097
#endif
#ifndef SDIO_DEVICE_ID_TI_WL1271
#define SDIO_DEVICE_ID_TI_WL1271 0x4076
#endif
static const struct mmc_fixup mmc_fixup_methods[] = {
/* by default sdio devices are considered CLK_GATING broken */
/* good cards will be whitelisted as they are tested */
{ SDIO_ANY_ID, SDIO_ANY_ID,
add_quirk_for_sdio_devices, MMC_QUIRK_BROKEN_CLK_GATING },
{ SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
remove_quirk, MMC_QUIRK_BROKEN_CLK_GATING },
{ 0 }
SDIO_FIXUP(SDIO_ANY_ID, SDIO_ANY_ID,
add_quirk_for_sdio_devices,
MMC_QUIRK_BROKEN_CLK_GATING),
SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
remove_quirk, MMC_QUIRK_BROKEN_CLK_GATING),
SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
add_quirk, MMC_QUIRK_NONSTD_FUNC_IF),
SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
add_quirk, MMC_QUIRK_DISABLE_CD),
END_FIXUP
};
void mmc_fixup_device(struct mmc_card *card)
void mmc_fixup_device(struct mmc_card *card, const struct mmc_fixup *table)
{
const struct mmc_fixup *f;
u64 rev = cid_rev_card(card);
/* Non-core specific workarounds. */
if (!table)
table = mmc_fixup_methods;
for (f = mmc_fixup_methods; f->vendor_fixup; f++) {
if ((f->vendor == card->cis.vendor
|| f->vendor == (u16) SDIO_ANY_ID) &&
(f->device == card->cis.device
|| f->device == (u16) SDIO_ANY_ID)) {
for (f = table; f->vendor_fixup; f++) {
if ((f->manfid == CID_MANFID_ANY ||
f->manfid == card->cid.manfid) &&
(f->oemid == CID_OEMID_ANY ||
f->oemid == card->cid.oemid) &&
(f->name == CID_NAME_ANY ||
!strncmp(f->name, card->cid.prod_name,
sizeof(card->cid.prod_name))) &&
(f->cis_vendor == card->cis.vendor ||
f->cis_vendor == (u16) SDIO_ANY_ID) &&
(f->cis_device == card->cis.device ||
f->cis_device == (u16) SDIO_ANY_ID) &&
rev >= f->rev_start && rev <= f->rev_end) {
dev_dbg(&card->dev, "calling %pF\n", f->vendor_fixup);
f->vendor_fixup(card, f->data);
}
......
drivers/mmc/core/sd.c
View file @ 8c1c77ff
......@@ -130,7 +130,7 @@ static int mmc_decode_csd(struct mmc_card *card)
break;
case 1:
/*
* This is a block-addressed SDHC card. Most
* This is a block-addressed SDHC or SDXC card. Most
* interesting fields are unused and have fixed
* values. To avoid getting tripped by buggy cards,
* we assume those fixed values ourselves.
......@@ -144,6 +144,11 @@ static int mmc_decode_csd(struct mmc_card *card)
e = UNSTUFF_BITS(resp, 96, 3);
csd->max_dtr = tran_exp[e] * tran_mant[m];
csd->cmdclass = UNSTUFF_BITS(resp, 84, 12);
csd->c_size = UNSTUFF_BITS(resp, 48, 22);
/* SDXC cards have a minimum C_SIZE of 0x00FFFF */
if (csd->c_size >= 0xFFFF)
mmc_card_set_ext_capacity(card);
m = UNSTUFF_BITS(resp, 48, 22);
csd->capacity = (1 + m) << 10;
......@@ -189,12 +194,17 @@ static int mmc_decode_scr(struct mmc_card *card)
scr->sda_vsn = UNSTUFF_BITS(resp, 56, 4);
scr->bus_widths = UNSTUFF_BITS(resp, 48, 4);
if (scr->sda_vsn == SCR_SPEC_VER_2)
/* Check if Physical Layer Spec v3.0 is supported */
scr->sda_spec3 = UNSTUFF_BITS(resp, 47, 1);
if (UNSTUFF_BITS(resp, 55, 1))
card->erased_byte = 0xFF;
else
card->erased_byte = 0x0;
if (scr->sda_spec3)
scr->cmds = UNSTUFF_BITS(resp, 32, 2);
return 0;
}
......@@ -274,29 +284,74 @@ static int mmc_read_switch(struct mmc_card *card)
status = kmalloc(64, GFP_KERNEL);
if (!status) {
printk(KERN_ERR "%s: could not allocate a buffer for "
"switch capabilities.\n", mmc_hostname(card->host));
"switch capabilities.\n",
mmc_hostname(card->host));
return -ENOMEM;
}
/* Find out the supported Bus Speed Modes. */
err = mmc_sd_switch(card, 0, 0, 1, status);
if (err) {
/* If the host or the card can't do the switch,
* fail more gracefully. */
if ((err != -EINVAL)
&& (err != -ENOSYS)
&& (err != -EFAULT))
/*
* If the host or the card can't do the switch,
* fail more gracefully.
*/
if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
goto out;
printk(KERN_WARNING "%s: problem reading switch "
"capabilities, performance might suffer.\n",
printk(KERN_WARNING "%s: problem reading Bus Speed modes.\n",
mmc_hostname(card->host));
err = 0;
goto out;
}
if (status[13] & 0x02)
card->sw_caps.hs_max_dtr = 50000000;
if (card->scr.sda_spec3) {
card->sw_caps.sd3_bus_mode = status[13];
/* Find out Driver Strengths supported by the card */
err = mmc_sd_switch(card, 0, 2, 1, status);
if (err) {
/*
* If the host or the card can't do the switch,
* fail more gracefully.
*/
if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
goto out;
printk(KERN_WARNING "%s: problem reading "
"Driver Strength.\n",
mmc_hostname(card->host));
err = 0;
goto out;
}
card->sw_caps.sd3_drv_type = status[9];
/* Find out Current Limits supported by the card */
err = mmc_sd_switch(card, 0, 3, 1, status);
if (err) {
/*
* If the host or the card can't do the switch,
* fail more gracefully.
*/
if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
goto out;
printk(KERN_WARNING "%s: problem reading "
"Current Limit.\n",
mmc_hostname(card->host));
err = 0;
goto out;
}
card->sw_caps.sd3_curr_limit = status[7];
} else {
if (status[13] & 0x02)
card->sw_caps.hs_max_dtr = 50000000;
}
out:
kfree(status);
......@@ -352,6 +407,232 @@ int mmc_sd_switch_hs(struct mmc_card *card)
return err;
}
static int sd_select_driver_type(struct mmc_card *card, u8 *status)
{
int host_drv_type = 0, card_drv_type = 0;
int err;
/*
* If the host doesn't support any of the Driver Types A,C or D,
* default Driver Type B is used.
*/
if (!(card->host->caps & (MMC_CAP_DRIVER_TYPE_A | MMC_CAP_DRIVER_TYPE_C
| MMC_CAP_DRIVER_TYPE_D)))
return 0;
if (card->host->caps & MMC_CAP_DRIVER_TYPE_A) {
host_drv_type = MMC_SET_DRIVER_TYPE_A;
if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_A)
card_drv_type = MMC_SET_DRIVER_TYPE_A;
else if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_B)
card_drv_type = MMC_SET_DRIVER_TYPE_B;
else if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C)
card_drv_type = MMC_SET_DRIVER_TYPE_C;
} else if (card->host->caps & MMC_CAP_DRIVER_TYPE_C) {
host_drv_type = MMC_SET_DRIVER_TYPE_C;
if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C)
card_drv_type = MMC_SET_DRIVER_TYPE_C;
} else if (!(card->host->caps & MMC_CAP_DRIVER_TYPE_D)) {
/*
* If we are here, that means only the default driver type
* B is supported by the host.
*/
host_drv_type = MMC_SET_DRIVER_TYPE_B;
if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_B)
card_drv_type = MMC_SET_DRIVER_TYPE_B;
else if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C)
card_drv_type = MMC_SET_DRIVER_TYPE_C;
}
err = mmc_sd_switch(card, 1, 2, card_drv_type, status);
if (err)
return err;
if ((status[15] & 0xF) != card_drv_type) {
printk(KERN_WARNING "%s: Problem setting driver strength!\n",
mmc_hostname(card->host));
return 0;
}
mmc_set_driver_type(card->host, host_drv_type);
return 0;
}
static int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status)
{
unsigned int bus_speed = 0, timing = 0;
int err;
/*
* If the host doesn't support any of the UHS-I modes, fallback on
* default speed.
*/
if (!(card->host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50)))
return 0;
if ((card->host->caps & MMC_CAP_UHS_SDR104) &&
(card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) {
bus_speed = UHS_SDR104_BUS_SPEED;
timing = MMC_TIMING_UHS_SDR104;
card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR;
} else if ((card->host->caps & MMC_CAP_UHS_DDR50) &&
(card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) {
bus_speed = UHS_DDR50_BUS_SPEED;
timing = MMC_TIMING_UHS_DDR50;
card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR;
} else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode &
SD_MODE_UHS_SDR50)) {
bus_speed = UHS_SDR50_BUS_SPEED;
timing = MMC_TIMING_UHS_SDR50;
card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR;
} else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) &&
(card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) {
bus_speed = UHS_SDR25_BUS_SPEED;
timing = MMC_TIMING_UHS_SDR25;
card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR;
} else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 |
MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode &
SD_MODE_UHS_SDR12)) {
bus_speed = UHS_SDR12_BUS_SPEED;
timing = MMC_TIMING_UHS_SDR12;
card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR;
}
card->sd_bus_speed = bus_speed;
err = mmc_sd_switch(card, 1, 0, bus_speed, status);
if (err)
return err;
if ((status[16] & 0xF) != bus_speed)
printk(KERN_WARNING "%s: Problem setting bus speed mode!\n",
mmc_hostname(card->host));
else {
mmc_set_timing(card->host, timing);
mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr);
}
return 0;
}
static int sd_set_current_limit(struct mmc_card *card, u8 *status)
{
int current_limit = 0;
int err;
/*
* Current limit switch is only defined for SDR50, SDR104, and DDR50
* bus speed modes. For other bus speed modes, we set the default
* current limit of 200mA.
*/
if ((card->sd_bus_speed == UHS_SDR50_BUS_SPEED) ||
(card->sd_bus_speed == UHS_SDR104_BUS_SPEED) ||
(card->sd_bus_speed == UHS_DDR50_BUS_SPEED)) {
if (card->host->caps & MMC_CAP_MAX_CURRENT_800) {
if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_800)
current_limit = SD_SET_CURRENT_LIMIT_800;
else if (card->sw_caps.sd3_curr_limit &
SD_MAX_CURRENT_600)
current_limit = SD_SET_CURRENT_LIMIT_600;
else if (card->sw_caps.sd3_curr_limit &
SD_MAX_CURRENT_400)
current_limit = SD_SET_CURRENT_LIMIT_400;
else if (card->sw_caps.sd3_curr_limit &
SD_MAX_CURRENT_200)
current_limit = SD_SET_CURRENT_LIMIT_200;
} else if (card->host->caps & MMC_CAP_MAX_CURRENT_600) {
if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_600)
current_limit = SD_SET_CURRENT_LIMIT_600;
else if (card->sw_caps.sd3_curr_limit &
SD_MAX_CURRENT_400)
current_limit = SD_SET_CURRENT_LIMIT_400;
else if (card->sw_caps.sd3_curr_limit &
SD_MAX_CURRENT_200)
current_limit = SD_SET_CURRENT_LIMIT_200;
} else if (card->host->caps & MMC_CAP_MAX_CURRENT_400) {
if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_400)
current_limit = SD_SET_CURRENT_LIMIT_400;
else if (card->sw_caps.sd3_curr_limit &
SD_MAX_CURRENT_200)
current_limit = SD_SET_CURRENT_LIMIT_200;
} else if (card->host->caps & MMC_CAP_MAX_CURRENT_200) {
if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_200)
current_limit = SD_SET_CURRENT_LIMIT_200;
}
} else
current_limit = SD_SET_CURRENT_LIMIT_200;
err = mmc_sd_switch(card, 1, 3, current_limit, status);
if (err)
return err;
if (((status[15] >> 4) & 0x0F) != current_limit)
printk(KERN_WARNING "%s: Problem setting current limit!\n",
mmc_hostname(card->host));
return 0;
}
/*
* UHS-I specific initialization procedure
*/
static int mmc_sd_init_uhs_card(struct mmc_card *card)
{
int err;
u8 *status;
if (!card->scr.sda_spec3)
return 0;
if (!(card->csd.cmdclass & CCC_SWITCH))
return 0;
status = kmalloc(64, GFP_KERNEL);
if (!status) {
printk(KERN_ERR "%s: could not allocate a buffer for "
"switch capabilities.\n", mmc_hostname(card->host));
return -ENOMEM;
}
/* Set 4-bit bus width */
if ((card->host->caps & MMC_CAP_4_BIT_DATA) &&
(card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
if (err)
goto out;
mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
}
/* Set the driver strength for the card */
err = sd_select_driver_type(card, status);
if (err)
goto out;
/* Set bus speed mode of the card */
err = sd_set_bus_speed_mode(card, status);
if (err)
goto out;
/* Set current limit for the card */
err = sd_set_current_limit(card, status);
if (err)
goto out;
/* SPI mode doesn't define CMD19 */
if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning)
err = card->host->ops->execute_tuning(card->host);
out:
kfree(status);
return err;
}
MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1],
card->raw_cid[2], card->raw_cid[3]);
MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1],
......@@ -400,7 +681,7 @@ struct device_type sd_type = {
/*
* Fetch CID from card.
*/
int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid)
int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr)
{
int err;
......@@ -420,12 +701,39 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid)
*/
err = mmc_send_if_cond(host, ocr);
if (!err)
ocr |= 1 << 30;
ocr |= SD_OCR_CCS;
/*
* If the host supports one of UHS-I modes, request the card
* to switch to 1.8V signaling level.
*/
if (host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50))
ocr |= SD_OCR_S18R;
/* If the host can supply more than 150mA, XPC should be set to 1. */
if (host->caps & (MMC_CAP_SET_XPC_330 | MMC_CAP_SET_XPC_300 |
MMC_CAP_SET_XPC_180))
ocr |= SD_OCR_XPC;
err = mmc_send_app_op_cond(host, ocr, NULL);
try_again:
err = mmc_send_app_op_cond(host, ocr, rocr);
if (err)
return err;
/*
* In case CCS and S18A in the response is set, start Signal Voltage
* Switch procedure. SPI mode doesn't support CMD11.
*/
if (!mmc_host_is_spi(host) && rocr &&
((*rocr & 0x41000000) == 0x41000000)) {
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, true);
if (err) {
ocr &= ~SD_OCR_S18R;
goto try_again;
}
}
if (mmc_host_is_spi(host))
err = mmc_send_cid(host, cid);
else
......@@ -553,11 +861,12 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *card;
int err;
u32 cid[4];
u32 rocr = 0;
BUG_ON(!host);
WARN_ON(!host->claimed);
err = mmc_sd_get_cid(host, ocr, cid);
err = mmc_sd_get_cid(host, ocr, cid, &rocr);
if (err)
return err;
......@@ -610,30 +919,47 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
if (err)
goto free_card;
/*
* Attempt to change to high-speed (if supported)
*/
err = mmc_sd_switch_hs(card);
if (err > 0)
mmc_sd_go_highspeed(card);
else if (err)
goto free_card;
/* Initialization sequence for UHS-I cards */
if (rocr & SD_ROCR_S18A) {
err = mmc_sd_init_uhs_card(card);
if (err)
goto free_card;
/*
* Set bus speed.
*/
mmc_set_clock(host, mmc_sd_get_max_clock(card));
/* Card is an ultra-high-speed card */
mmc_sd_card_set_uhs(card);
/*
* Switch to wider bus (if supported).
*/
if ((host->caps & MMC_CAP_4_BIT_DATA) &&
(card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
if (err)
/*
* Since initialization is now complete, enable preset
* value registers for UHS-I cards.
*/
if (host->ops->enable_preset_value)
host->ops->enable_preset_value(host, true);
} else {
/*
* Attempt to change to high-speed (if supported)
*/
err = mmc_sd_switch_hs(card);
if (err > 0)
mmc_sd_go_highspeed(card);
else if (err)
goto free_card;
mmc_set_bus_width(host, MMC_BUS_WIDTH_4);
/*
* Set bus speed.
*/
mmc_set_clock(host, mmc_sd_get_max_clock(card));
/*
* Switch to wider bus (if supported).
*/
if ((host->caps & MMC_CAP_4_BIT_DATA) &&
(card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
if (err)
goto free_card;
mmc_set_bus_width(host, MMC_BUS_WIDTH_4);
}
}
host->card = card;
......@@ -773,6 +1099,15 @@ int mmc_attach_sd(struct mmc_host *host)
BUG_ON(!host);
WARN_ON(!host->claimed);
/* Make sure we are at 3.3V signalling voltage */
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, false);
if (err)
return err;
/* Disable preset value enable if already set since last time */
if (host->ops->enable_preset_value)
host->ops->enable_preset_value(host, false);
err = mmc_send_app_op_cond(host, 0, &ocr);
if (err)
return err;
......
drivers/mmc/core/sd.h
View file @ 8c1c77ff
......@@ -5,7 +5,7 @@
extern struct device_type sd_type;
int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid);
int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr);
int mmc_sd_get_csd(struct mmc_host *host, struct mmc_card *card);
void mmc_decode_cid(struct mmc_card *card);
int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card,
......
drivers/mmc/core/sd_ops.c
View file @ 8c1c77ff
......@@ -21,10 +21,10 @@
#include "core.h"
#include "sd_ops.h"
static int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)
int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)
{
int err;
struct mmc_command cmd;
struct mmc_command cmd = {0};
BUG_ON(!host);
BUG_ON(card && (card->host != host));
......@@ -49,6 +49,7 @@ static int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)
return 0;
}
EXPORT_SYMBOL_GPL(mmc_app_cmd);
/**
* mmc_wait_for_app_cmd - start an application command and wait for
......@@ -66,7 +67,7 @@ static int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)
int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
struct mmc_command *cmd, int retries)
{
struct mmc_request mrq;
struct mmc_request mrq = {0};
int i, err;
......@@ -119,13 +120,11 @@ EXPORT_SYMBOL(mmc_wait_for_app_cmd);
int mmc_app_set_bus_width(struct mmc_card *card, int width)
{
int err;
struct mmc_command cmd;
struct mmc_command cmd = {0};
BUG_ON(!card);
BUG_ON(!card->host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = SD_APP_SET_BUS_WIDTH;
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
......@@ -149,13 +148,11 @@ int mmc_app_set_bus_width(struct mmc_card *card, int width)
int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
{
struct mmc_command cmd;
struct mmc_command cmd = {0};
int i, err = 0;
BUG_ON(!host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = SD_APP_OP_COND;
if (mmc_host_is_spi(host))
cmd.arg = ocr & (1 << 30); /* SPI only defines one bit */
......@@ -194,7 +191,7 @@ int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
int mmc_send_if_cond(struct mmc_host *host, u32 ocr)
{
struct mmc_command cmd;
struct mmc_command cmd = {0};
int err;
static const u8 test_pattern = 0xAA;
u8 result_pattern;
......@@ -226,13 +223,11 @@ int mmc_send_if_cond(struct mmc_host *host, u32 ocr)
int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca)
{
int err;
struct mmc_command cmd;
struct mmc_command cmd = {0};
BUG_ON(!host);
BUG_ON(!rca);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = SD_SEND_RELATIVE_ADDR;
cmd.arg = 0;
cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
......@@ -249,9 +244,9 @@ int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca)
int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
{
int err;
struct mmc_request mrq;
struct mmc_command cmd;
struct mmc_data data;
struct mmc_request mrq = {0};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
void *data_buf;
......@@ -272,10 +267,6 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
if (data_buf == NULL)
return -ENOMEM;
memset(&mrq, 0, sizeof(struct mmc_request));
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
......@@ -312,9 +303,9 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
int mmc_sd_switch(struct mmc_card *card, int mode, int group,
u8 value, u8 *resp)
{
struct mmc_request mrq;
struct mmc_command cmd;
struct mmc_data data;
struct mmc_request mrq = {0};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
BUG_ON(!card);
......@@ -325,10 +316,6 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group,
mode = !!mode;
value &= 0xF;
memset(&mrq, 0, sizeof(struct mmc_request));
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
......@@ -361,9 +348,9 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group,
int mmc_app_sd_status(struct mmc_card *card, void *ssr)
{
int err;
struct mmc_request mrq;
struct mmc_command cmd;
struct mmc_data data;
struct mmc_request mrq = {0};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
BUG_ON(!card);
......@@ -376,10 +363,6 @@ int mmc_app_sd_status(struct mmc_card *card, void *ssr)
if (err)
return err;
memset(&mrq, 0, sizeof(struct mmc_request));
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
......
drivers/mmc/core/sdio.c
View file @ 8c1c77ff
......@@ -16,6 +16,7 @@
#include <linux/mmc/card.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include "core.h"
#include "bus.h"
......@@ -31,6 +32,11 @@ static int sdio_read_fbr(struct sdio_func *func)
int ret;
unsigned char data;
if (mmc_card_nonstd_func_interface(func->card)) {
func->class = SDIO_CLASS_NONE;
return 0;
}
ret = mmc_io_rw_direct(func->card, 0, 0,
SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF, 0, &data);
if (ret)
......@@ -181,7 +187,7 @@ static int sdio_disable_cd(struct mmc_card *card)
int ret;
u8 ctrl;
if (!card->cccr.disable_cd)
if (!mmc_card_disable_cd(card))
return 0;
ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl);
......@@ -363,8 +369,8 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
goto err;
}
if (ocr & R4_MEMORY_PRESENT
&& mmc_sd_get_cid(host, host->ocr & ocr, card->raw_cid) == 0) {
if ((ocr & R4_MEMORY_PRESENT) &&
mmc_sd_get_cid(host, host->ocr & ocr, card->raw_cid, NULL) == 0) {
card->type = MMC_TYPE_SD_COMBO;
if (oldcard && (oldcard->type != MMC_TYPE_SD_COMBO ||
......@@ -466,7 +472,7 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
card = oldcard;
}
mmc_fixup_device(card);
mmc_fixup_device(card, NULL);
if (card->type == MMC_TYPE_SD_COMBO) {
err = mmc_sd_setup_card(host, card, oldcard != NULL);
......@@ -625,7 +631,7 @@ static int mmc_sdio_suspend(struct mmc_host *host)
}
}
if (!err && host->pm_flags & MMC_PM_KEEP_POWER) {
if (!err && mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) {
mmc_claim_host(host);
sdio_disable_wide(host->card);
mmc_release_host(host);
......@@ -645,10 +651,10 @@ static int mmc_sdio_resume(struct mmc_host *host)
mmc_claim_host(host);
/* No need to reinitialize powered-resumed nonremovable cards */
if (mmc_card_is_removable(host) || !mmc_card_is_powered_resumed(host))
if (mmc_card_is_removable(host) || !mmc_card_keep_power(host))
err = mmc_sdio_init_card(host, host->ocr, host->card,
(host->pm_flags & MMC_PM_KEEP_POWER));
else if (mmc_card_is_powered_resumed(host)) {
mmc_card_keep_power(host));
else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) {
/* We may have switched to 1-bit mode during suspend */
err = sdio_enable_4bit_bus(host->card);
if (err > 0) {
......@@ -691,7 +697,7 @@ static int mmc_sdio_power_restore(struct mmc_host *host)
mmc_claim_host(host);
ret = mmc_sdio_init_card(host, host->ocr, host->card,
(host->pm_flags & MMC_PM_KEEP_POWER));
mmc_card_keep_power(host));
if (!ret && host->sdio_irqs)
mmc_signal_sdio_irq(host);
mmc_release_host(host);
......
drivers/mmc/core/sdio_irq.c
View file @ 8c1c77ff
......@@ -31,6 +31,17 @@ static int process_sdio_pending_irqs(struct mmc_card *card)
{
int i, ret, count;
unsigned char pending;
struct sdio_func *func;
/*
* Optimization, if there is only 1 function interrupt registered
* call irq handler directly
*/
func = card->sdio_single_irq;
if (func) {
func->irq_handler(func);
return 1;
}
ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_INTx, 0, &pending);
if (ret) {
......@@ -42,7 +53,7 @@ static int process_sdio_pending_irqs(struct mmc_card *card)
count = 0;
for (i = 1; i <= 7; i++) {
if (pending & (1 << i)) {
struct sdio_func *func = card->sdio_func[i - 1];
func = card->sdio_func[i - 1];
if (!func) {
printk(KERN_WARNING "%s: pending IRQ for "
"non-existent function\n",
......@@ -186,6 +197,24 @@ static int sdio_card_irq_put(struct mmc_card *card)
return 0;
}
/* If there is only 1 function registered set sdio_single_irq */
static void sdio_single_irq_set(struct mmc_card *card)
{
struct sdio_func *func;
int i;
card->sdio_single_irq = NULL;
if ((card->host->caps & MMC_CAP_SDIO_IRQ) &&
card->host->sdio_irqs == 1)
for (i = 0; i < card->sdio_funcs; i++) {
func = card->sdio_func[i];
if (func && func->irq_handler) {
card->sdio_single_irq = func;
break;
}
}
}
/**
* sdio_claim_irq - claim the IRQ for a SDIO function
* @func: SDIO function
......@@ -227,6 +256,7 @@ int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler)
ret = sdio_card_irq_get(func->card);
if (ret)
func->irq_handler = NULL;
sdio_single_irq_set(func->card);
return ret;
}
......@@ -251,6 +281,7 @@ int sdio_release_irq(struct sdio_func *func)
if (func->irq_handler) {
func->irq_handler = NULL;
sdio_card_irq_put(func->card);
sdio_single_irq_set(func->card);
}
ret = mmc_io_rw_direct(func->card, 0, 0, SDIO_CCCR_IENx, 0, &reg);
......
drivers/mmc/core/sdio_ops.c
View file @ 8c1c77ff
......@@ -21,13 +21,11 @@
int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
{
struct mmc_command cmd;
struct mmc_command cmd = {0};
int i, err = 0;
BUG_ON(!host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = SD_IO_SEND_OP_COND;
cmd.arg = ocr;
cmd.flags = MMC_RSP_SPI_R4 | MMC_RSP_R4 | MMC_CMD_BCR;
......@@ -70,7 +68,7 @@ int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
static int mmc_io_rw_direct_host(struct mmc_host *host, int write, unsigned fn,
unsigned addr, u8 in, u8 *out)
{
struct mmc_command cmd;
struct mmc_command cmd = {0};
int err;
BUG_ON(!host);
......@@ -80,8 +78,6 @@ static int mmc_io_rw_direct_host(struct mmc_host *host, int write, unsigned fn,
if (addr & ~0x1FFFF)
return -EINVAL;
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = SD_IO_RW_DIRECT;
cmd.arg = write ? 0x80000000 : 0x00000000;
cmd.arg |= fn << 28;
......@@ -125,9 +121,9 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz)
{
struct mmc_request mrq;
struct mmc_command cmd;
struct mmc_data data;
struct mmc_request mrq = {0};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
BUG_ON(!card);
......@@ -140,10 +136,6 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
if (addr & ~0x1FFFF)
return -EINVAL;
memset(&mrq, 0, sizeof(struct mmc_request));
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
......
drivers/mmc/host/Kconfig
View file @ 8c1c77ff
......@@ -154,7 +154,7 @@ config MMC_SDHCI_DOVE
If unsure, say N.
config MMC_SDHCI_TEGRA
tristate "SDHCI platform support for the Tegra SD/MMC Controller"
bool "SDHCI platform support for the Tegra SD/MMC Controller"
depends on MMC_SDHCI_PLTFM && ARCH_TEGRA
select MMC_SDHCI_IO_ACCESSORS
help
......@@ -535,6 +535,37 @@ config MMC_JZ4740
If you have a board based on such a SoC and with a SD/MMC slot,
say Y or M here.
config MMC_VUB300
tristate "VUB300 USB to SDIO/SD/MMC Host Controller support"
depends on USB
help
This selects support for Elan Digital Systems' VUB300 chip.
The VUB300 is a USB-SDIO Host Controller Interface chip
that enables the host computer to use SDIO/SD/MMC cards
via a USB 2.0 or USB 1.1 host.
The VUB300 chip will be found in both physically separate
USB to SDIO/SD/MMC adapters and embedded on some motherboards.
The VUB300 chip supports SD and MMC memory cards in addition
to single and multifunction SDIO cards.
Some SDIO cards will need a firmware file to be loaded and
sent to VUB300 chip in order to achieve better data throughput.
Download these "Offload Pseudocode" from Elan Digital Systems'
web-site http://www.elandigitalsystems.com/support/downloads.php
and put them in /lib/firmware. Note that without these additional
firmware files the VUB300 chip will still function, but not at
the best obtainable data rate.
To compile this mmc host controller driver as a module,
choose M here: the module will be called vub300.
If you have a computer with an embedded VUB300 chip
or if you intend connecting a USB adapter based on a
VUB300 chip say Y or M here.
config MMC_USHC
tristate "USB SD Host Controller (USHC) support"
depends on USB
......
drivers/mmc/host/Makefile
View file @ 8c1c77ff
......@@ -41,6 +41,7 @@ obj-$(CONFIG_SDH_BFIN) += bfin_sdh.o
obj-$(CONFIG_MMC_DW) += dw_mmc.o
obj-$(CONFIG_MMC_SH_MMCIF) += sh_mmcif.o
obj-$(CONFIG_MMC_JZ4740) += jz4740_mmc.o
obj-$(CONFIG_MMC_VUB300) += vub300.o
obj-$(CONFIG_MMC_USHC) += ushc.o
obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-platform.o
......
drivers/mmc/host/dw_mmc.c
View file @ 8c1c77ff
......@@ -1769,9 +1769,6 @@ static int dw_mci_suspend(struct platform_device *pdev, pm_message_t mesg)
int i, ret;
struct dw_mci *host = platform_get_drvdata(pdev);
if (host->vmmc)
regulator_enable(host->vmmc);
for (i = 0; i < host->num_slots; i++) {
struct dw_mci_slot *slot = host->slot[i];
if (!slot)
......@@ -1798,6 +1795,9 @@ static int dw_mci_resume(struct platform_device *pdev)
int i, ret;
struct dw_mci *host = platform_get_drvdata(pdev);
if (host->vmmc)
regulator_enable(host->vmmc);
if (host->dma_ops->init)
host->dma_ops->init(host);
......
drivers/mmc/host/sdhci-pci.c
View file @ 8c1c77ff
......@@ -18,11 +18,9 @@
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/mmc/host.h>
#include <asm/scatterlist.h>
#include <asm/io.h>
#include <linux/scatterlist.h>
#include <linux/io.h>
#include "sdhci.h"
......@@ -46,14 +44,14 @@ struct sdhci_pci_slot;
struct sdhci_pci_fixes {
unsigned int quirks;
int (*probe)(struct sdhci_pci_chip*);
int (*probe) (struct sdhci_pci_chip *);
int (*probe_slot)(struct sdhci_pci_slot*);
void (*remove_slot)(struct sdhci_pci_slot*, int);
int (*probe_slot) (struct sdhci_pci_slot *);
void (*remove_slot) (struct sdhci_pci_slot *, int);
int (*suspend)(struct sdhci_pci_chip*,
int (*suspend) (struct sdhci_pci_chip *,
pm_message_t);
int (*resume)(struct sdhci_pci_chip*);
int (*resume) (struct sdhci_pci_chip *);
};
struct sdhci_pci_slot {
......@@ -329,6 +327,11 @@ static int jmicron_probe(struct sdhci_pci_chip *chip)
return ret;
}
/* quirk for unsable RO-detection on JM388 chips */
if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
return 0;
}
......@@ -402,7 +405,7 @@ static int jmicron_suspend(struct sdhci_pci_chip *chip, pm_message_t state)
if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
for (i = 0;i < chip->num_slots;i++)
for (i = 0; i < chip->num_slots; i++)
jmicron_enable_mmc(chip->slots[i]->host, 0);
}
......@@ -415,7 +418,7 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
for (i = 0;i < chip->num_slots;i++)
for (i = 0; i < chip->num_slots; i++)
jmicron_enable_mmc(chip->slots[i]->host, 1);
}
......@@ -798,7 +801,7 @@ static struct sdhci_ops sdhci_pci_ops = {
#ifdef CONFIG_PM
static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
static int sdhci_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct sdhci_pci_chip *chip;
struct sdhci_pci_slot *slot;
......@@ -810,7 +813,7 @@ static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
if (!chip)
return 0;
for (i = 0;i < chip->num_slots;i++) {
for (i = 0; i < chip->num_slots; i++) {
slot = chip->slots[i];
if (!slot)
continue;
......@@ -818,7 +821,7 @@ static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
ret = sdhci_suspend_host(slot->host, state);
if (ret) {
for (i--;i >= 0;i--)
for (i--; i >= 0; i--)
sdhci_resume_host(chip->slots[i]->host);
return ret;
}
......@@ -833,7 +836,7 @@ static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
if (chip->fixes && chip->fixes->suspend) {
ret = chip->fixes->suspend(chip, state);
if (ret) {
for (i = chip->num_slots - 1;i >= 0;i--)
for (i = chip->num_slots - 1; i >= 0; i--)
sdhci_resume_host(chip->slots[i]->host);
return ret;
}
......@@ -855,7 +858,7 @@ static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
return 0;
}
static int sdhci_pci_resume (struct pci_dev *pdev)
static int sdhci_pci_resume(struct pci_dev *pdev)
{
struct sdhci_pci_chip *chip;
struct sdhci_pci_slot *slot;
......@@ -877,7 +880,7 @@ static int sdhci_pci_resume (struct pci_dev *pdev)
return ret;
}
for (i = 0;i < chip->num_slots;i++) {
for (i = 0; i < chip->num_slots; i++) {
slot = chip->slots[i];
if (!slot)
continue;
......@@ -1059,7 +1062,7 @@ static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
}
chip->pdev = pdev;
chip->fixes = (const struct sdhci_pci_fixes*)ent->driver_data;
chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
if (chip->fixes)
chip->quirks = chip->fixes->quirks;
chip->num_slots = slots;
......@@ -1074,10 +1077,10 @@ static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
slots = chip->num_slots; /* Quirk may have changed this */
for (i = 0;i < slots;i++) {
for (i = 0; i < slots; i++) {
slot = sdhci_pci_probe_slot(pdev, chip, first_bar + i);
if (IS_ERR(slot)) {
for (i--;i >= 0;i--)
for (i--; i >= 0; i--)
sdhci_pci_remove_slot(chip->slots[i]);
ret = PTR_ERR(slot);
goto free;
......@@ -1105,7 +1108,7 @@ static void __devexit sdhci_pci_remove(struct pci_dev *pdev)
chip = pci_get_drvdata(pdev);
if (chip) {
for (i = 0;i < chip->num_slots; i++)
for (i = 0; i < chip->num_slots; i++)
sdhci_pci_remove_slot(chip->slots[i]);
pci_set_drvdata(pdev, NULL);
......@@ -1116,9 +1119,9 @@ static void __devexit sdhci_pci_remove(struct pci_dev *pdev)
}
static struct pci_driver sdhci_driver = {
.name = "sdhci-pci",
.name = "sdhci-pci",
.id_table = pci_ids,
.probe = sdhci_pci_probe,
.probe = sdhci_pci_probe,
.remove = __devexit_p(sdhci_pci_remove),
.suspend = sdhci_pci_suspend,
.resume = sdhci_pci_resume,
......
drivers/mmc/host/sdhci-pxa.c
View file @ 8c1c77ff
......@@ -69,7 +69,45 @@ static void set_clock(struct sdhci_host *host, unsigned int clock)
}
}
static int set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
{
u16 ctrl_2;
/*
* Set V18_EN -- UHS modes do not work without this.
* does not change signaling voltage
*/
ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
/* Select Bus Speed Mode for host */
ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
switch (uhs) {
case MMC_TIMING_UHS_SDR12:
ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
break;
case MMC_TIMING_UHS_SDR25:
ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
break;
case MMC_TIMING_UHS_SDR50:
ctrl_2 |= SDHCI_CTRL_UHS_SDR50 | SDHCI_CTRL_VDD_180;
break;
case MMC_TIMING_UHS_SDR104:
ctrl_2 |= SDHCI_CTRL_UHS_SDR104 | SDHCI_CTRL_VDD_180;
break;
case MMC_TIMING_UHS_DDR50:
ctrl_2 |= SDHCI_CTRL_UHS_DDR50 | SDHCI_CTRL_VDD_180;
break;
}
sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
pr_debug("%s:%s uhs = %d, ctrl_2 = %04X\n",
__func__, mmc_hostname(host->mmc), uhs, ctrl_2);
return 0;
}
static struct sdhci_ops sdhci_pxa_ops = {
.set_uhs_signaling = set_uhs_signaling,
.set_clock = set_clock,
};
......@@ -136,11 +174,19 @@ static int __devinit sdhci_pxa_probe(struct platform_device *pdev)
host->hw_name = "MMC";
host->ops = &sdhci_pxa_ops;
host->irq = irq;
host->quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
host->quirks = SDHCI_QUIRK_BROKEN_ADMA
| SDHCI_QUIRK_BROKEN_TIMEOUT_VAL
| SDHCI_QUIRK_32BIT_DMA_ADDR
| SDHCI_QUIRK_32BIT_DMA_SIZE
| SDHCI_QUIRK_32BIT_ADMA_SIZE
| SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC;
if (pdata->quirks)
host->quirks |= pdata->quirks;
/* enable 1/8V DDR capable */
host->mmc->caps |= MMC_CAP_1_8V_DDR;
/* If slot design supports 8 bit data, indicate this to MMC. */
if (pdata->flags & PXA_FLAG_SD_8_BIT_CAPABLE_SLOT)
host->mmc->caps |= MMC_CAP_8_BIT_DATA;
......
drivers/mmc/host/sdhci-tegra.c
View file @ 8c1c77ff
......@@ -184,6 +184,8 @@ static int tegra_sdhci_pltfm_init(struct sdhci_host *host,
clk_enable(clk);
pltfm_host->clk = clk;
host->mmc->pm_caps = plat->pm_flags;
if (plat->is_8bit)
host->mmc->caps |= MMC_CAP_8_BIT_DATA;
......
drivers/mmc/host/sdhci.c
View file @ 8c1c77ff
......@@ -38,13 +38,16 @@
#define SDHCI_USE_LEDS_CLASS
#endif
#define MAX_TUNING_LOOP 40
static unsigned int debug_quirks = 0;
static void sdhci_prepare_data(struct sdhci_host *, struct mmc_data *);
static void sdhci_finish_data(struct sdhci_host *);
static void sdhci_send_command(struct sdhci_host *, struct mmc_command *);
static void sdhci_finish_command(struct sdhci_host *);
static int sdhci_execute_tuning(struct mmc_host *mmc);
static void sdhci_tuning_timer(unsigned long data);
static void sdhci_dumpregs(struct sdhci_host *host)
{
......@@ -84,6 +87,8 @@ static void sdhci_dumpregs(struct sdhci_host *host)
printk(KERN_DEBUG DRIVER_NAME ": Cmd: 0x%08x | Max curr: 0x%08x\n",
sdhci_readw(host, SDHCI_COMMAND),
sdhci_readl(host, SDHCI_MAX_CURRENT));
printk(KERN_DEBUG DRIVER_NAME ": Host ctl2: 0x%08x\n",
sdhci_readw(host, SDHCI_HOST_CONTROL2));
if (host->flags & SDHCI_USE_ADMA)
printk(KERN_DEBUG DRIVER_NAME ": ADMA Err: 0x%08x | ADMA Ptr: 0x%08x\n",
......@@ -157,6 +162,9 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
ier = sdhci_readl(host, SDHCI_INT_ENABLE);
if (host->ops->platform_reset_enter)
host->ops->platform_reset_enter(host, mask);
sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);
if (mask & SDHCI_RESET_ALL)
......@@ -177,6 +185,9 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
mdelay(1);
}
if (host->ops->platform_reset_exit)
host->ops->platform_reset_exit(host, mask);
if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, ier);
}
......@@ -591,9 +602,10 @@ static void sdhci_adma_table_post(struct sdhci_host *host,
data->sg_len, direction);
}
static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data)
static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd)
{
u8 count;
struct mmc_data *data = cmd->data;
unsigned target_timeout, current_timeout;
/*
......@@ -605,9 +617,16 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data)
if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL)
return 0xE;
/* Unspecified timeout, assume max */
if (!data && !cmd->cmd_timeout_ms)
return 0xE;
/* timeout in us */
target_timeout = data->timeout_ns / 1000 +
data->timeout_clks / host->clock;
if (!data)
target_timeout = cmd->cmd_timeout_ms * 1000;
else
target_timeout = data->timeout_ns / 1000 +
data->timeout_clks / host->clock;
if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)
host->timeout_clk = host->clock / 1000;
......@@ -622,6 +641,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data)
* =>
* (1) / (2) > 2^6
*/
BUG_ON(!host->timeout_clk);
count = 0;
current_timeout = (1 << 13) * 1000 / host->timeout_clk;
while (current_timeout < target_timeout) {
......@@ -632,8 +652,8 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data)
}
if (count >= 0xF) {
printk(KERN_WARNING "%s: Too large timeout requested!\n",
mmc_hostname(host->mmc));
printk(KERN_WARNING "%s: Too large timeout requested for CMD%d!\n",
mmc_hostname(host->mmc), cmd->opcode);
count = 0xE;
}
......@@ -651,15 +671,21 @@ static void sdhci_set_transfer_irqs(struct sdhci_host *host)
sdhci_clear_set_irqs(host, dma_irqs, pio_irqs);
}
static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
{
u8 count;
u8 ctrl;
struct mmc_data *data = cmd->data;
int ret;
WARN_ON(host->data);
if (data == NULL)
if (data || (cmd->flags & MMC_RSP_BUSY)) {
count = sdhci_calc_timeout(host, cmd);
sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL);
}
if (!data)
return;
/* Sanity checks */
......@@ -669,9 +695,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
host->data = data;
host->data_early = 0;
count = sdhci_calc_timeout(host, data);
sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL);
host->data->bytes_xfered = 0;
if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))
host->flags |= SDHCI_REQ_USE_DMA;
......@@ -807,15 +831,17 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
sdhci_set_transfer_irqs(host);
/* We do not handle DMA boundaries, so set it to max (512 KiB) */
sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, data->blksz), SDHCI_BLOCK_SIZE);
/* Set the DMA boundary value and block size */
sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG,
data->blksz), SDHCI_BLOCK_SIZE);
sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
}
static void sdhci_set_transfer_mode(struct sdhci_host *host,
struct mmc_data *data)
struct mmc_command *cmd)
{
u16 mode;
struct mmc_data *data = cmd->data;
if (data == NULL)
return;
......@@ -823,12 +849,20 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host,
WARN_ON(!host->data);
mode = SDHCI_TRNS_BLK_CNT_EN;
if (data->blocks > 1) {
if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12)
mode |= SDHCI_TRNS_MULTI | SDHCI_TRNS_ACMD12;
else
mode |= SDHCI_TRNS_MULTI;
if (mmc_op_multi(cmd->opcode) || data->blocks > 1) {
mode |= SDHCI_TRNS_MULTI;
/*
* If we are sending CMD23, CMD12 never gets sent
* on successful completion (so no Auto-CMD12).
*/
if (!host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD12))
mode |= SDHCI_TRNS_AUTO_CMD12;
else if (host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) {
mode |= SDHCI_TRNS_AUTO_CMD23;
sdhci_writel(host, host->mrq->sbc->arg, SDHCI_ARGUMENT2);
}
}
if (data->flags & MMC_DATA_READ)
mode |= SDHCI_TRNS_READ;
if (host->flags & SDHCI_REQ_USE_DMA)
......@@ -868,7 +902,15 @@ static void sdhci_finish_data(struct sdhci_host *host)
else
data->bytes_xfered = data->blksz * data->blocks;
if (data->stop) {
/*
* Need to send CMD12 if -
* a) open-ended multiblock transfer (no CMD23)
* b) error in multiblock transfer
*/
if (data->stop &&
(data->error ||
!host->mrq->sbc)) {
/*
* The controller needs a reset of internal state machines
* upon error conditions.
......@@ -920,11 +962,11 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
host->cmd = cmd;
sdhci_prepare_data(host, cmd->data);
sdhci_prepare_data(host, cmd);
sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT);
sdhci_set_transfer_mode(host, cmd->data);
sdhci_set_transfer_mode(host, cmd);
if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
printk(KERN_ERR "%s: Unsupported response type!\n",
......@@ -947,7 +989,9 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
flags |= SDHCI_CMD_CRC;
if (cmd->flags & MMC_RSP_OPCODE)
flags |= SDHCI_CMD_INDEX;
if (cmd->data)
/* CMD19 is special in that the Data Present Select should be set */
if (cmd->data || (cmd->opcode == MMC_SEND_TUNING_BLOCK))
flags |= SDHCI_CMD_DATA;
sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND);
......@@ -977,19 +1021,27 @@ static void sdhci_finish_command(struct sdhci_host *host)
host->cmd->error = 0;
if (host->data && host->data_early)
sdhci_finish_data(host);
/* Finished CMD23, now send actual command. */
if (host->cmd == host->mrq->sbc) {
host->cmd = NULL;
sdhci_send_command(host, host->mrq->cmd);
} else {
if (!host->cmd->data)
tasklet_schedule(&host->finish_tasklet);
/* Processed actual command. */
if (host->data && host->data_early)
sdhci_finish_data(host);
host->cmd = NULL;
if (!host->cmd->data)
tasklet_schedule(&host->finish_tasklet);
host->cmd = NULL;
}
}
static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
{
int div;
u16 clk;
int div = 0; /* Initialized for compiler warning */
u16 clk = 0;
unsigned long timeout;
if (clock == host->clock)
......@@ -1007,14 +1059,45 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
goto out;
if (host->version >= SDHCI_SPEC_300) {
/* Version 3.00 divisors must be a multiple of 2. */
if (host->max_clk <= clock)
div = 1;
else {
for (div = 2; div < SDHCI_MAX_DIV_SPEC_300; div += 2) {
if ((host->max_clk / div) <= clock)
break;
/*
* Check if the Host Controller supports Programmable Clock
* Mode.
*/
if (host->clk_mul) {
u16 ctrl;
/*
* We need to figure out whether the Host Driver needs
* to select Programmable Clock Mode, or the value can
* be set automatically by the Host Controller based on
* the Preset Value registers.
*/
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
if (!(ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) {
for (div = 1; div <= 1024; div++) {
if (((host->max_clk * host->clk_mul) /
div) <= clock)
break;
}
/*
* Set Programmable Clock Mode in the Clock
* Control register.
*/
clk = SDHCI_PROG_CLOCK_MODE;
div--;
}
} else {
/* Version 3.00 divisors must be a multiple of 2. */
if (host->max_clk <= clock)
div = 1;
else {
for (div = 2; div < SDHCI_MAX_DIV_SPEC_300;
div += 2) {
if ((host->max_clk / div) <= clock)
break;
}
}
div >>= 1;
}
} else {
/* Version 2.00 divisors must be a power of 2. */
......@@ -1022,10 +1105,10 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
if ((host->max_clk / div) <= clock)
break;
}
div >>= 1;
}
div >>= 1;
clk = (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT;
clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT;
clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN)
<< SDHCI_DIVIDER_HI_SHIFT;
clk |= SDHCI_CLOCK_INT_EN;
......@@ -1131,7 +1214,12 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
#ifndef SDHCI_USE_LEDS_CLASS
sdhci_activate_led(host);
#endif
if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12) {
/*
* Ensure we don't send the STOP for non-SET_BLOCK_COUNTED
* requests if Auto-CMD12 is enabled.
*/
if (!mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) {
if (mrq->stop) {
mrq->data->stop = NULL;
mrq->stop = NULL;
......@@ -1150,8 +1238,30 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
if (!present || host->flags & SDHCI_DEVICE_DEAD) {
host->mrq->cmd->error = -ENOMEDIUM;
tasklet_schedule(&host->finish_tasklet);
} else
sdhci_send_command(host, mrq->cmd);
} else {
u32 present_state;
present_state = sdhci_readl(host, SDHCI_PRESENT_STATE);
/*
* Check if the re-tuning timer has already expired and there
* is no on-going data transfer. If so, we need to execute
* tuning procedure before sending command.
*/
if ((host->flags & SDHCI_NEEDS_RETUNING) &&
!(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ))) {
spin_unlock_irqrestore(&host->lock, flags);
sdhci_execute_tuning(mmc);
spin_lock_irqsave(&host->lock, flags);
/* Restore original mmc_request structure */
host->mrq = mrq;
}
if (mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23))
sdhci_send_command(host, mrq->sbc);
else
sdhci_send_command(host, mrq->cmd);
}
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
......@@ -1222,7 +1332,84 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
else
ctrl &= ~SDHCI_CTRL_HISPD;
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
if (host->version >= SDHCI_SPEC_300) {
u16 clk, ctrl_2;
unsigned int clock;
/* In case of UHS-I modes, set High Speed Enable */
if ((ios->timing == MMC_TIMING_UHS_SDR50) ||
(ios->timing == MMC_TIMING_UHS_SDR104) ||
(ios->timing == MMC_TIMING_UHS_DDR50) ||
(ios->timing == MMC_TIMING_UHS_SDR25) ||
(ios->timing == MMC_TIMING_UHS_SDR12))
ctrl |= SDHCI_CTRL_HISPD;
ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
if (!(ctrl_2 & SDHCI_CTRL_PRESET_VAL_ENABLE)) {
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
/*
* We only need to set Driver Strength if the
* preset value enable is not set.
*/
ctrl_2 &= ~SDHCI_CTRL_DRV_TYPE_MASK;
if (ios->drv_type == MMC_SET_DRIVER_TYPE_A)
ctrl_2 |= SDHCI_CTRL_DRV_TYPE_A;
else if (ios->drv_type == MMC_SET_DRIVER_TYPE_C)
ctrl_2 |= SDHCI_CTRL_DRV_TYPE_C;
sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
} else {
/*
* According to SDHC Spec v3.00, if the Preset Value
* Enable in the Host Control 2 register is set, we
* need to reset SD Clock Enable before changing High
* Speed Enable to avoid generating clock gliches.
*/
/* Reset SD Clock Enable */
clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
clk &= ~SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
/* Re-enable SD Clock */
clock = host->clock;
host->clock = 0;
sdhci_set_clock(host, clock);
}
/* Reset SD Clock Enable */
clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
clk &= ~SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
if (host->ops->set_uhs_signaling)
host->ops->set_uhs_signaling(host, ios->timing);
else {
ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
/* Select Bus Speed Mode for host */
ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
if (ios->timing == MMC_TIMING_UHS_SDR12)
ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
else if (ios->timing == MMC_TIMING_UHS_SDR25)
ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
else if (ios->timing == MMC_TIMING_UHS_SDR50)
ctrl_2 |= SDHCI_CTRL_UHS_SDR50;
else if (ios->timing == MMC_TIMING_UHS_SDR104)
ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
else if (ios->timing == MMC_TIMING_UHS_DDR50)
ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
}
/* Re-enable SD Clock */
clock = host->clock;
host->clock = 0;
sdhci_set_clock(host, clock);
} else
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
/*
* Some (ENE) controllers go apeshit on some ios operation,
......@@ -1237,14 +1424,11 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
spin_unlock_irqrestore(&host->lock, flags);
}
static int sdhci_get_ro(struct mmc_host *mmc)
static int check_ro(struct sdhci_host *host)
{
struct sdhci_host *host;
unsigned long flags;
int is_readonly;
host = mmc_priv(mmc);
spin_lock_irqsave(&host->lock, flags);
if (host->flags & SDHCI_DEVICE_DEAD)
......@@ -1262,6 +1446,29 @@ static int sdhci_get_ro(struct mmc_host *mmc)
!is_readonly : is_readonly;
}
#define SAMPLE_COUNT 5
static int sdhci_get_ro(struct mmc_host *mmc)
{
struct sdhci_host *host;
int i, ro_count;
host = mmc_priv(mmc);
if (!(host->quirks & SDHCI_QUIRK_UNSTABLE_RO_DETECT))
return check_ro(host);
ro_count = 0;
for (i = 0; i < SAMPLE_COUNT; i++) {
if (check_ro(host)) {
if (++ro_count > SAMPLE_COUNT / 2)
return 1;
}
msleep(30);
}
return 0;
}
static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
{
struct sdhci_host *host;
......@@ -1284,11 +1491,322 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
spin_unlock_irqrestore(&host->lock, flags);
}
static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
struct mmc_ios *ios)
{
struct sdhci_host *host;
u8 pwr;
u16 clk, ctrl;
u32 present_state;
host = mmc_priv(mmc);
/*
* Signal Voltage Switching is only applicable for Host Controllers
* v3.00 and above.
*/
if (host->version < SDHCI_SPEC_300)
return 0;
/*
* We first check whether the request is to set signalling voltage
* to 3.3V. If so, we change the voltage to 3.3V and return quickly.
*/
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) {
/* Set 1.8V Signal Enable in the Host Control2 register to 0 */
ctrl &= ~SDHCI_CTRL_VDD_180;
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
/* Wait for 5ms */
usleep_range(5000, 5500);
/* 3.3V regulator output should be stable within 5 ms */
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
if (!(ctrl & SDHCI_CTRL_VDD_180))
return 0;
else {
printk(KERN_INFO DRIVER_NAME ": Switching to 3.3V "
"signalling voltage failed\n");
return -EIO;
}
} else if (!(ctrl & SDHCI_CTRL_VDD_180) &&
(ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180)) {
/* Stop SDCLK */
clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
clk &= ~SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
/* Check whether DAT[3:0] is 0000 */
present_state = sdhci_readl(host, SDHCI_PRESENT_STATE);
if (!((present_state & SDHCI_DATA_LVL_MASK) >>
SDHCI_DATA_LVL_SHIFT)) {
/*
* Enable 1.8V Signal Enable in the Host Control2
* register
*/
ctrl |= SDHCI_CTRL_VDD_180;
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
/* Wait for 5ms */
usleep_range(5000, 5500);
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
if (ctrl & SDHCI_CTRL_VDD_180) {
/* Provide SDCLK again and wait for 1ms*/
clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
clk |= SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
usleep_range(1000, 1500);
/*
* If DAT[3:0] level is 1111b, then the card
* was successfully switched to 1.8V signaling.
*/
present_state = sdhci_readl(host,
SDHCI_PRESENT_STATE);
if ((present_state & SDHCI_DATA_LVL_MASK) ==
SDHCI_DATA_LVL_MASK)
return 0;
}
}
/*
* If we are here, that means the switch to 1.8V signaling
* failed. We power cycle the card, and retry initialization
* sequence by setting S18R to 0.
*/
pwr = sdhci_readb(host, SDHCI_POWER_CONTROL);
pwr &= ~SDHCI_POWER_ON;
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
/* Wait for 1ms as per the spec */
usleep_range(1000, 1500);
pwr |= SDHCI_POWER_ON;
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
printk(KERN_INFO DRIVER_NAME ": Switching to 1.8V signalling "
"voltage failed, retrying with S18R set to 0\n");
return -EAGAIN;
} else
/* No signal voltage switch required */
return 0;
}
static int sdhci_execute_tuning(struct mmc_host *mmc)
{
struct sdhci_host *host;
u16 ctrl;
u32 ier;
int tuning_loop_counter = MAX_TUNING_LOOP;
unsigned long timeout;
int err = 0;
host = mmc_priv(mmc);
disable_irq(host->irq);
spin_lock(&host->lock);
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
/*
* Host Controller needs tuning only in case of SDR104 mode
* and for SDR50 mode when Use Tuning for SDR50 is set in
* Capabilities register.
*/
if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR104) ||
(((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR50) &&
(host->flags & SDHCI_SDR50_NEEDS_TUNING)))
ctrl |= SDHCI_CTRL_EXEC_TUNING;
else {
spin_unlock(&host->lock);
enable_irq(host->irq);
return 0;
}
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
/*
* As per the Host Controller spec v3.00, tuning command
* generates Buffer Read Ready interrupt, so enable that.
*
* Note: The spec clearly says that when tuning sequence
* is being performed, the controller does not generate
* interrupts other than Buffer Read Ready interrupt. But
* to make sure we don't hit a controller bug, we _only_
* enable Buffer Read Ready interrupt here.
*/
ier = sdhci_readl(host, SDHCI_INT_ENABLE);
sdhci_clear_set_irqs(host, ier, SDHCI_INT_DATA_AVAIL);
/*
* Issue CMD19 repeatedly till Execute Tuning is set to 0 or the number
* of loops reaches 40 times or a timeout of 150ms occurs.
*/
timeout = 150;
do {
struct mmc_command cmd = {0};
struct mmc_request mrq = {0};
if (!tuning_loop_counter && !timeout)
break;
cmd.opcode = MMC_SEND_TUNING_BLOCK;
cmd.arg = 0;
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
cmd.retries = 0;
cmd.data = NULL;
cmd.error = 0;
mrq.cmd = &cmd;
host->mrq = &mrq;
/*
* In response to CMD19, the card sends 64 bytes of tuning
* block to the Host Controller. So we set the block size
* to 64 here.
*/
sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), SDHCI_BLOCK_SIZE);
/*
* The tuning block is sent by the card to the host controller.
* So we set the TRNS_READ bit in the Transfer Mode register.
* This also takes care of setting DMA Enable and Multi Block
* Select in the same register to 0.
*/
sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE);
sdhci_send_command(host, &cmd);
host->cmd = NULL;
host->mrq = NULL;
spin_unlock(&host->lock);
enable_irq(host->irq);
/* Wait for Buffer Read Ready interrupt */
wait_event_interruptible_timeout(host->buf_ready_int,
(host->tuning_done == 1),
msecs_to_jiffies(50));
disable_irq(host->irq);
spin_lock(&host->lock);
if (!host->tuning_done) {
printk(KERN_INFO DRIVER_NAME ": Timeout waiting for "
"Buffer Read Ready interrupt during tuning "
"procedure, falling back to fixed sampling "
"clock\n");
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
ctrl &= ~SDHCI_CTRL_TUNED_CLK;
ctrl &= ~SDHCI_CTRL_EXEC_TUNING;
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
err = -EIO;
goto out;
}
host->tuning_done = 0;
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
tuning_loop_counter--;
timeout--;
mdelay(1);
} while (ctrl & SDHCI_CTRL_EXEC_TUNING);
/*
* The Host Driver has exhausted the maximum number of loops allowed,
* so use fixed sampling frequency.
*/
if (!tuning_loop_counter || !timeout) {
ctrl &= ~SDHCI_CTRL_TUNED_CLK;
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
} else {
if (!(ctrl & SDHCI_CTRL_TUNED_CLK)) {
printk(KERN_INFO DRIVER_NAME ": Tuning procedure"
" failed, falling back to fixed sampling"
" clock\n");
err = -EIO;
}
}
out:
/*
* If this is the very first time we are here, we start the retuning
* timer. Since only during the first time, SDHCI_NEEDS_RETUNING
* flag won't be set, we check this condition before actually starting
* the timer.
*/
if (!(host->flags & SDHCI_NEEDS_RETUNING) && host->tuning_count &&
(host->tuning_mode == SDHCI_TUNING_MODE_1)) {
mod_timer(&host->tuning_timer, jiffies +
host->tuning_count * HZ);
/* Tuning mode 1 limits the maximum data length to 4MB */
mmc->max_blk_count = (4 * 1024 * 1024) / mmc->max_blk_size;
} else {
host->flags &= ~SDHCI_NEEDS_RETUNING;
/* Reload the new initial value for timer */
if (host->tuning_mode == SDHCI_TUNING_MODE_1)
mod_timer(&host->tuning_timer, jiffies +
host->tuning_count * HZ);
}
/*
* In case tuning fails, host controllers which support re-tuning can
* try tuning again at a later time, when the re-tuning timer expires.
* So for these controllers, we return 0. Since there might be other
* controllers who do not have this capability, we return error for
* them.
*/
if (err && host->tuning_count &&
host->tuning_mode == SDHCI_TUNING_MODE_1)
err = 0;
sdhci_clear_set_irqs(host, SDHCI_INT_DATA_AVAIL, ier);
spin_unlock(&host->lock);
enable_irq(host->irq);
return err;
}
static void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable)
{
struct sdhci_host *host;
u16 ctrl;
unsigned long flags;
host = mmc_priv(mmc);
/* Host Controller v3.00 defines preset value registers */
if (host->version < SDHCI_SPEC_300)
return;
spin_lock_irqsave(&host->lock, flags);
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
/*
* We only enable or disable Preset Value if they are not already
* enabled or disabled respectively. Otherwise, we bail out.
*/
if (enable && !(ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) {
ctrl |= SDHCI_CTRL_PRESET_VAL_ENABLE;
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
} else if (!enable && (ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) {
ctrl &= ~SDHCI_CTRL_PRESET_VAL_ENABLE;
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
}
spin_unlock_irqrestore(&host->lock, flags);
}
static const struct mmc_host_ops sdhci_ops = {
.request = sdhci_request,
.set_ios = sdhci_set_ios,
.get_ro = sdhci_get_ro,
.enable_sdio_irq = sdhci_enable_sdio_irq,
.start_signal_voltage_switch = sdhci_start_signal_voltage_switch,
.execute_tuning = sdhci_execute_tuning,
.enable_preset_value = sdhci_enable_preset_value,
};
/*****************************************************************************\
......@@ -1345,6 +1863,9 @@ static void sdhci_tasklet_finish(unsigned long param)
del_timer(&host->timer);
if (host->version >= SDHCI_SPEC_300)
del_timer(&host->tuning_timer);
mrq = host->mrq;
/*
......@@ -1418,6 +1939,20 @@ static void sdhci_timeout_timer(unsigned long data)
spin_unlock_irqrestore(&host->lock, flags);
}
static void sdhci_tuning_timer(unsigned long data)
{
struct sdhci_host *host;
unsigned long flags;
host = (struct sdhci_host *)data;
spin_lock_irqsave(&host->lock, flags);
host->flags |= SDHCI_NEEDS_RETUNING;
spin_unlock_irqrestore(&host->lock, flags);
}
/*****************************************************************************\
* *
* Interrupt handling *
......@@ -1506,6 +2041,16 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
{
BUG_ON(intmask == 0);
/* CMD19 generates _only_ Buffer Read Ready interrupt */
if (intmask & SDHCI_INT_DATA_AVAIL) {
if (SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)) ==
MMC_SEND_TUNING_BLOCK) {
host->tuning_done = 1;
wake_up(&host->buf_ready_int);
return;
}
}
if (!host->data) {
/*
* The "data complete" interrupt is also used to
......@@ -1551,10 +2096,28 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
* We currently don't do anything fancy with DMA
* boundaries, but as we can't disable the feature
* we need to at least restart the transfer.
*
* According to the spec sdhci_readl(host, SDHCI_DMA_ADDRESS)
* should return a valid address to continue from, but as
* some controllers are faulty, don't trust them.
*/
if (intmask & SDHCI_INT_DMA_END)
sdhci_writel(host, sdhci_readl(host, SDHCI_DMA_ADDRESS),
SDHCI_DMA_ADDRESS);
if (intmask & SDHCI_INT_DMA_END) {
u32 dmastart, dmanow;
dmastart = sg_dma_address(host->data->sg);
dmanow = dmastart + host->data->bytes_xfered;
/*
* Force update to the next DMA block boundary.
*/
dmanow = (dmanow &
~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1)) +
SDHCI_DEFAULT_BOUNDARY_SIZE;
host->data->bytes_xfered = dmanow - dmastart;
DBG("%s: DMA base 0x%08x, transferred 0x%06x bytes,"
" next 0x%08x\n",
mmc_hostname(host->mmc), dmastart,
host->data->bytes_xfered, dmanow);
sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS);
}
if (intmask & SDHCI_INT_DATA_END) {
if (host->cmd) {
......@@ -1664,6 +2227,14 @@ int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state)
sdhci_disable_card_detection(host);
/* Disable tuning since we are suspending */
if (host->version >= SDHCI_SPEC_300 && host->tuning_count &&
host->tuning_mode == SDHCI_TUNING_MODE_1) {
host->flags &= ~SDHCI_NEEDS_RETUNING;
mod_timer(&host->tuning_timer, jiffies +
host->tuning_count * HZ);
}
ret = mmc_suspend_host(host->mmc);
if (ret)
return ret;
......@@ -1705,6 +2276,11 @@ int sdhci_resume_host(struct sdhci_host *host)
ret = mmc_resume_host(host->mmc);
sdhci_enable_card_detection(host);
/* Set the re-tuning expiration flag */
if ((host->version >= SDHCI_SPEC_300) && host->tuning_count &&
(host->tuning_mode == SDHCI_TUNING_MODE_1))
host->flags |= SDHCI_NEEDS_RETUNING;
return ret;
}
......@@ -1751,7 +2327,9 @@ EXPORT_SYMBOL_GPL(sdhci_alloc_host);
int sdhci_add_host(struct sdhci_host *host)
{
struct mmc_host *mmc;
unsigned int caps, ocr_avail;
u32 caps[2];
u32 max_current_caps;
unsigned int ocr_avail;
int ret;
WARN_ON(host == NULL);
......@@ -1774,12 +2352,15 @@ int sdhci_add_host(struct sdhci_host *host)
host->version);
}
caps = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps :
caps[0] = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps :
sdhci_readl(host, SDHCI_CAPABILITIES);
caps[1] = (host->version >= SDHCI_SPEC_300) ?
sdhci_readl(host, SDHCI_CAPABILITIES_1) : 0;
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_SDMA;
else if (!(caps & SDHCI_CAN_DO_SDMA))
else if (!(caps[0] & SDHCI_CAN_DO_SDMA))
DBG("Controller doesn't have SDMA capability\n");
else
host->flags |= SDHCI_USE_SDMA;
......@@ -1790,7 +2371,8 @@ int sdhci_add_host(struct sdhci_host *host)
host->flags &= ~SDHCI_USE_SDMA;
}
if ((host->version >= SDHCI_SPEC_200) && (caps & SDHCI_CAN_DO_ADMA2))
if ((host->version >= SDHCI_SPEC_200) &&
(caps[0] & SDHCI_CAN_DO_ADMA2))
host->flags |= SDHCI_USE_ADMA;
if ((host->quirks & SDHCI_QUIRK_BROKEN_ADMA) &&
......@@ -1840,10 +2422,10 @@ int sdhci_add_host(struct sdhci_host *host)
}
if (host->version >= SDHCI_SPEC_300)
host->max_clk = (caps & SDHCI_CLOCK_V3_BASE_MASK)
host->max_clk = (caps[0] & SDHCI_CLOCK_V3_BASE_MASK)
>> SDHCI_CLOCK_BASE_SHIFT;
else
host->max_clk = (caps & SDHCI_CLOCK_BASE_MASK)
host->max_clk = (caps[0] & SDHCI_CLOCK_BASE_MASK)
>> SDHCI_CLOCK_BASE_SHIFT;
host->max_clk *= 1000000;
......@@ -1859,7 +2441,7 @@ int sdhci_add_host(struct sdhci_host *host)
}
host->timeout_clk =
(caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT;
(caps[0] & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT;
if (host->timeout_clk == 0) {
if (host->ops->get_timeout_clock) {
host->timeout_clk = host->ops->get_timeout_clock(host);
......@@ -1871,22 +2453,55 @@ int sdhci_add_host(struct sdhci_host *host)
return -ENODEV;
}
}
if (caps & SDHCI_TIMEOUT_CLK_UNIT)
if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT)
host->timeout_clk *= 1000;
/*
* In case of Host Controller v3.00, find out whether clock
* multiplier is supported.
*/
host->clk_mul = (caps[1] & SDHCI_CLOCK_MUL_MASK) >>
SDHCI_CLOCK_MUL_SHIFT;
/*
* In case the value in Clock Multiplier is 0, then programmable
* clock mode is not supported, otherwise the actual clock
* multiplier is one more than the value of Clock Multiplier
* in the Capabilities Register.
*/
if (host->clk_mul)
host->clk_mul += 1;
/*
* Set host parameters.
*/
mmc->ops = &sdhci_ops;
mmc->f_max = host->max_clk;
if (host->ops->get_min_clock)
mmc->f_min = host->ops->get_min_clock(host);
else if (host->version >= SDHCI_SPEC_300)
mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300;
else
else if (host->version >= SDHCI_SPEC_300) {
if (host->clk_mul) {
mmc->f_min = (host->max_clk * host->clk_mul) / 1024;
mmc->f_max = host->max_clk * host->clk_mul;
} else
mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300;
} else
mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200;
mmc->f_max = host->max_clk;
mmc->caps |= MMC_CAP_SDIO_IRQ;
mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23;
if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12)
host->flags |= SDHCI_AUTO_CMD12;
/* Auto-CMD23 stuff only works in ADMA or PIO. */
if ((host->version >= SDHCI_SPEC_300) &&
((host->flags & SDHCI_USE_ADMA) ||
!(host->flags & SDHCI_USE_SDMA))) {
host->flags |= SDHCI_AUTO_CMD23;
DBG("%s: Auto-CMD23 available\n", mmc_hostname(mmc));
} else {
DBG("%s: Auto-CMD23 unavailable\n", mmc_hostname(mmc));
}
/*
* A controller may support 8-bit width, but the board itself
......@@ -1898,21 +2513,113 @@ int sdhci_add_host(struct sdhci_host *host)
if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA))
mmc->caps |= MMC_CAP_4_BIT_DATA;
if (caps & SDHCI_CAN_DO_HISPD)
if (caps[0] & SDHCI_CAN_DO_HISPD)
mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&
mmc_card_is_removable(mmc))
mmc->caps |= MMC_CAP_NEEDS_POLL;
/* UHS-I mode(s) supported by the host controller. */
if (host->version >= SDHCI_SPEC_300)
mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25;
/* SDR104 supports also implies SDR50 support */
if (caps[1] & SDHCI_SUPPORT_SDR104)
mmc->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50;
else if (caps[1] & SDHCI_SUPPORT_SDR50)
mmc->caps |= MMC_CAP_UHS_SDR50;
if (caps[1] & SDHCI_SUPPORT_DDR50)
mmc->caps |= MMC_CAP_UHS_DDR50;
/* Does the host needs tuning for SDR50? */
if (caps[1] & SDHCI_USE_SDR50_TUNING)
host->flags |= SDHCI_SDR50_NEEDS_TUNING;
/* Driver Type(s) (A, C, D) supported by the host */
if (caps[1] & SDHCI_DRIVER_TYPE_A)
mmc->caps |= MMC_CAP_DRIVER_TYPE_A;
if (caps[1] & SDHCI_DRIVER_TYPE_C)
mmc->caps |= MMC_CAP_DRIVER_TYPE_C;
if (caps[1] & SDHCI_DRIVER_TYPE_D)
mmc->caps |= MMC_CAP_DRIVER_TYPE_D;
/* Initial value for re-tuning timer count */
host->tuning_count = (caps[1] & SDHCI_RETUNING_TIMER_COUNT_MASK) >>
SDHCI_RETUNING_TIMER_COUNT_SHIFT;
/*
* In case Re-tuning Timer is not disabled, the actual value of
* re-tuning timer will be 2 ^ (n - 1).
*/
if (host->tuning_count)
host->tuning_count = 1 << (host->tuning_count - 1);
/* Re-tuning mode supported by the Host Controller */
host->tuning_mode = (caps[1] & SDHCI_RETUNING_MODE_MASK) >>
SDHCI_RETUNING_MODE_SHIFT;
ocr_avail = 0;
if (caps & SDHCI_CAN_VDD_330)
/*
* According to SD Host Controller spec v3.00, if the Host System
* can afford more than 150mA, Host Driver should set XPC to 1. Also
* the value is meaningful only if Voltage Support in the Capabilities
* register is set. The actual current value is 4 times the register
* value.
*/
max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT);
if (caps[0] & SDHCI_CAN_VDD_330) {
int max_current_330;
ocr_avail |= MMC_VDD_32_33 | MMC_VDD_33_34;
if (caps & SDHCI_CAN_VDD_300)
max_current_330 = ((max_current_caps &
SDHCI_MAX_CURRENT_330_MASK) >>
SDHCI_MAX_CURRENT_330_SHIFT) *
SDHCI_MAX_CURRENT_MULTIPLIER;
if (max_current_330 > 150)
mmc->caps |= MMC_CAP_SET_XPC_330;
}
if (caps[0] & SDHCI_CAN_VDD_300) {
int max_current_300;
ocr_avail |= MMC_VDD_29_30 | MMC_VDD_30_31;
if (caps & SDHCI_CAN_VDD_180)
max_current_300 = ((max_current_caps &
SDHCI_MAX_CURRENT_300_MASK) >>
SDHCI_MAX_CURRENT_300_SHIFT) *
SDHCI_MAX_CURRENT_MULTIPLIER;
if (max_current_300 > 150)
mmc->caps |= MMC_CAP_SET_XPC_300;
}
if (caps[0] & SDHCI_CAN_VDD_180) {
int max_current_180;
ocr_avail |= MMC_VDD_165_195;
max_current_180 = ((max_current_caps &
SDHCI_MAX_CURRENT_180_MASK) >>
SDHCI_MAX_CURRENT_180_SHIFT) *
SDHCI_MAX_CURRENT_MULTIPLIER;
if (max_current_180 > 150)
mmc->caps |= MMC_CAP_SET_XPC_180;
/* Maximum current capabilities of the host at 1.8V */
if (max_current_180 >= 800)
mmc->caps |= MMC_CAP_MAX_CURRENT_800;
else if (max_current_180 >= 600)
mmc->caps |= MMC_CAP_MAX_CURRENT_600;
else if (max_current_180 >= 400)
mmc->caps |= MMC_CAP_MAX_CURRENT_400;
else
mmc->caps |= MMC_CAP_MAX_CURRENT_200;
}
mmc->ocr_avail = ocr_avail;
mmc->ocr_avail_sdio = ocr_avail;
if (host->ocr_avail_sdio)
......@@ -1972,7 +2679,7 @@ int sdhci_add_host(struct sdhci_host *host)
if (host->quirks & SDHCI_QUIRK_FORCE_BLK_SZ_2048) {
mmc->max_blk_size = 2;
} else {
mmc->max_blk_size = (caps & SDHCI_MAX_BLOCK_MASK) >>
mmc->max_blk_size = (caps[0] & SDHCI_MAX_BLOCK_MASK) >>
SDHCI_MAX_BLOCK_SHIFT;
if (mmc->max_blk_size >= 3) {
printk(KERN_WARNING "%s: Invalid maximum block size, "
......@@ -1998,6 +2705,15 @@ int sdhci_add_host(struct sdhci_host *host)
setup_timer(&host->timer, sdhci_timeout_timer, (unsigned long)host);
if (host->version >= SDHCI_SPEC_300) {
init_waitqueue_head(&host->buf_ready_int);
/* Initialize re-tuning timer */
init_timer(&host->tuning_timer);
host->tuning_timer.data = (unsigned long)host;
host->tuning_timer.function = sdhci_tuning_timer;
}
ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED,
mmc_hostname(mmc), host);
if (ret)
......@@ -2091,6 +2807,8 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
free_irq(host->irq, host);
del_timer_sync(&host->timer);
if (host->version >= SDHCI_SPEC_300)
del_timer_sync(&host->tuning_timer);
tasklet_kill(&host->card_tasklet);
tasklet_kill(&host->finish_tasklet);
......
drivers/mmc/host/sdhci.h
View file @ 8c1c77ff
......@@ -25,6 +25,7 @@
*/
#define SDHCI_DMA_ADDRESS 0x00
#define SDHCI_ARGUMENT2 SDHCI_DMA_ADDRESS
#define SDHCI_BLOCK_SIZE 0x04
#define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))
......@@ -36,7 +37,8 @@
#define SDHCI_TRANSFER_MODE 0x0C
#define SDHCI_TRNS_DMA 0x01
#define SDHCI_TRNS_BLK_CNT_EN 0x02
#define SDHCI_TRNS_ACMD12 0x04
#define SDHCI_TRNS_AUTO_CMD12 0x04
#define SDHCI_TRNS_AUTO_CMD23 0x08
#define SDHCI_TRNS_READ 0x10
#define SDHCI_TRNS_MULTI 0x20
......@@ -68,8 +70,10 @@
#define SDHCI_DATA_AVAILABLE 0x00000800
#define SDHCI_CARD_PRESENT 0x00010000
#define SDHCI_WRITE_PROTECT 0x00080000
#define SDHCI_DATA_LVL_MASK 0x00F00000
#define SDHCI_DATA_LVL_SHIFT 20
#define SDHCI_HOST_CONTROL 0x28
#define SDHCI_HOST_CONTROL 0x28
#define SDHCI_CTRL_LED 0x01
#define SDHCI_CTRL_4BITBUS 0x02
#define SDHCI_CTRL_HISPD 0x04
......@@ -99,6 +103,7 @@
#define SDHCI_DIV_MASK 0xFF
#define SDHCI_DIV_MASK_LEN 8
#define SDHCI_DIV_HI_MASK 0x300
#define SDHCI_PROG_CLOCK_MODE 0x0020
#define SDHCI_CLOCK_CARD_EN 0x0004
#define SDHCI_CLOCK_INT_STABLE 0x0002
#define SDHCI_CLOCK_INT_EN 0x0001
......@@ -146,7 +151,22 @@
#define SDHCI_ACMD12_ERR 0x3C
/* 3E-3F reserved */
#define SDHCI_HOST_CONTROL2 0x3E
#define SDHCI_CTRL_UHS_MASK 0x0007
#define SDHCI_CTRL_UHS_SDR12 0x0000
#define SDHCI_CTRL_UHS_SDR25 0x0001
#define SDHCI_CTRL_UHS_SDR50 0x0002
#define SDHCI_CTRL_UHS_SDR104 0x0003
#define SDHCI_CTRL_UHS_DDR50 0x0004
#define SDHCI_CTRL_VDD_180 0x0008
#define SDHCI_CTRL_DRV_TYPE_MASK 0x0030
#define SDHCI_CTRL_DRV_TYPE_B 0x0000
#define SDHCI_CTRL_DRV_TYPE_A 0x0010
#define SDHCI_CTRL_DRV_TYPE_C 0x0020
#define SDHCI_CTRL_DRV_TYPE_D 0x0030
#define SDHCI_CTRL_EXEC_TUNING 0x0040
#define SDHCI_CTRL_TUNED_CLK 0x0080
#define SDHCI_CTRL_PRESET_VAL_ENABLE 0x8000
#define SDHCI_CAPABILITIES 0x40
#define SDHCI_TIMEOUT_CLK_MASK 0x0000003F
......@@ -167,9 +187,30 @@
#define SDHCI_CAN_VDD_180 0x04000000
#define SDHCI_CAN_64BIT 0x10000000
#define SDHCI_SUPPORT_SDR50 0x00000001
#define SDHCI_SUPPORT_SDR104 0x00000002
#define SDHCI_SUPPORT_DDR50 0x00000004
#define SDHCI_DRIVER_TYPE_A 0x00000010
#define SDHCI_DRIVER_TYPE_C 0x00000020
#define SDHCI_DRIVER_TYPE_D 0x00000040
#define SDHCI_RETUNING_TIMER_COUNT_MASK 0x00000F00
#define SDHCI_RETUNING_TIMER_COUNT_SHIFT 8
#define SDHCI_USE_SDR50_TUNING 0x00002000
#define SDHCI_RETUNING_MODE_MASK 0x0000C000
#define SDHCI_RETUNING_MODE_SHIFT 14
#define SDHCI_CLOCK_MUL_MASK 0x00FF0000
#define SDHCI_CLOCK_MUL_SHIFT 16
#define SDHCI_CAPABILITIES_1 0x44
#define SDHCI_MAX_CURRENT 0x48
#define SDHCI_MAX_CURRENT 0x48
#define SDHCI_MAX_CURRENT_330_MASK 0x0000FF
#define SDHCI_MAX_CURRENT_330_SHIFT 0
#define SDHCI_MAX_CURRENT_300_MASK 0x00FF00
#define SDHCI_MAX_CURRENT_300_SHIFT 8
#define SDHCI_MAX_CURRENT_180_MASK 0xFF0000
#define SDHCI_MAX_CURRENT_180_SHIFT 16
#define SDHCI_MAX_CURRENT_MULTIPLIER 4
/* 4C-4F reserved for more max current */
......@@ -202,6 +243,12 @@
#define SDHCI_MAX_DIV_SPEC_200 256
#define SDHCI_MAX_DIV_SPEC_300 2046
/*
* Host SDMA buffer boundary. Valid values from 4K to 512K in powers of 2.
*/
#define SDHCI_DEFAULT_BOUNDARY_SIZE (512 * 1024)
#define SDHCI_DEFAULT_BOUNDARY_ARG (ilog2(SDHCI_DEFAULT_BOUNDARY_SIZE) - 12)
struct sdhci_ops {
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
u32 (*read_l)(struct sdhci_host *host, int reg);
......@@ -223,6 +270,10 @@ struct sdhci_ops {
void (*platform_send_init_74_clocks)(struct sdhci_host *host,
u8 power_mode);
unsigned int (*get_ro)(struct sdhci_host *host);
void (*platform_reset_enter)(struct sdhci_host *host, u8 mask);
void (*platform_reset_exit)(struct sdhci_host *host, u8 mask);
int (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs);
};
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
......
drivers/mmc/host/sh_mmcif.c
View file @ 8c1c77ff
......@@ -29,6 +29,8 @@
#include <linux/mmc/sh_mmcif.h>
#include <linux/pagemap.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/spinlock.h>
#define DRIVER_NAME "sh_mmcif"
#define DRIVER_VERSION "2010-04-28"
......@@ -153,6 +155,12 @@
#define CLKDEV_MMC_DATA 20000000 /* 20MHz */
#define CLKDEV_INIT 400000 /* 400 KHz */
enum mmcif_state {
STATE_IDLE,
STATE_REQUEST,
STATE_IOS,
};
struct sh_mmcif_host {
struct mmc_host *mmc;
struct mmc_data *data;
......@@ -164,6 +172,9 @@ struct sh_mmcif_host {
long timeout;
void __iomem *addr;
struct completion intr_wait;
enum mmcif_state state;
spinlock_t lock;
bool power;
/* DMA support */
struct dma_chan *chan_rx;
......@@ -798,17 +809,31 @@ static void sh_mmcif_stop_cmd(struct sh_mmcif_host *host,
static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct sh_mmcif_host *host = mmc_priv(mmc);
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
if (host->state != STATE_IDLE) {
spin_unlock_irqrestore(&host->lock, flags);
mrq->cmd->error = -EAGAIN;
mmc_request_done(mmc, mrq);
return;
}
host->state = STATE_REQUEST;
spin_unlock_irqrestore(&host->lock, flags);
switch (mrq->cmd->opcode) {
/* MMCIF does not support SD/SDIO command */
case SD_IO_SEND_OP_COND:
case MMC_APP_CMD:
host->state = STATE_IDLE;
mrq->cmd->error = -ETIMEDOUT;
mmc_request_done(mmc, mrq);
return;
case MMC_SEND_EXT_CSD: /* = SD_SEND_IF_COND (8) */
if (!mrq->data) {
/* send_if_cond cmd (not support) */
host->state = STATE_IDLE;
mrq->cmd->error = -ETIMEDOUT;
mmc_request_done(mmc, mrq);
return;
......@@ -830,12 +855,9 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
sh_mmcif_start_cmd(host, mrq, mrq->cmd);
host->data = NULL;
if (mrq->cmd->error != 0) {
mmc_request_done(mmc, mrq);
return;
}
if (mrq->stop)
if (!mrq->cmd->error && mrq->stop)
sh_mmcif_stop_cmd(host, mrq, mrq->stop);
host->state = STATE_IDLE;
mmc_request_done(mmc, mrq);
}
......@@ -843,15 +865,39 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct sh_mmcif_host *host = mmc_priv(mmc);
struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
if (host->state != STATE_IDLE) {
spin_unlock_irqrestore(&host->lock, flags);
return;
}
host->state = STATE_IOS;
spin_unlock_irqrestore(&host->lock, flags);
if (ios->power_mode == MMC_POWER_UP) {
if (p->set_pwr)
p->set_pwr(host->pd, ios->power_mode);
if (!host->power) {
/* See if we also get DMA */
sh_mmcif_request_dma(host, host->pd->dev.platform_data);
pm_runtime_get_sync(&host->pd->dev);
host->power = true;
}
} else if (ios->power_mode == MMC_POWER_OFF || !ios->clock) {
/* clock stop */
sh_mmcif_clock_control(host, 0);
if (ios->power_mode == MMC_POWER_OFF && p->down_pwr)
p->down_pwr(host->pd);
if (ios->power_mode == MMC_POWER_OFF) {
if (host->power) {
pm_runtime_put(&host->pd->dev);
sh_mmcif_release_dma(host);
host->power = false;
}
if (p->down_pwr)
p->down_pwr(host->pd);
}
host->state = STATE_IDLE;
return;
}
......@@ -859,6 +905,7 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
sh_mmcif_clock_control(host, ios->clock);
host->bus_width = ios->bus_width;
host->state = STATE_IDLE;
}
static int sh_mmcif_get_cd(struct mmc_host *mmc)
......@@ -925,7 +972,7 @@ static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
err = 1;
} else {
dev_dbg(&host->pd->dev, "Not support int\n");
dev_dbg(&host->pd->dev, "Unsupported interrupt: 0x%x\n", state);
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
err = 1;
......@@ -996,6 +1043,7 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
host->pd = pdev;
init_completion(&host->intr_wait);
spin_lock_init(&host->lock);
mmc->ops = &sh_mmcif_ops;
mmc->f_max = host->clk;
......@@ -1020,24 +1068,29 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
sh_mmcif_sync_reset(host);
platform_set_drvdata(pdev, host);
/* See if we also get DMA */
sh_mmcif_request_dma(host, pd);
pm_runtime_enable(&pdev->dev);
host->power = false;
ret = pm_runtime_resume(&pdev->dev);
if (ret < 0)
goto clean_up2;
mmc_add_host(mmc);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
ret = request_irq(irq[0], sh_mmcif_intr, 0, "sh_mmc:error", host);
if (ret) {
dev_err(&pdev->dev, "request_irq error (sh_mmc:error)\n");
goto clean_up2;
goto clean_up3;
}
ret = request_irq(irq[1], sh_mmcif_intr, 0, "sh_mmc:int", host);
if (ret) {
free_irq(irq[0], host);
dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n");
goto clean_up2;
goto clean_up3;
}
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
sh_mmcif_detect(host->mmc);
dev_info(&pdev->dev, "driver version %s\n", DRIVER_VERSION);
......@@ -1045,7 +1098,11 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
sh_mmcif_readl(host->addr, MMCIF_CE_VERSION) & 0x0000ffff);
return ret;
clean_up3:
mmc_remove_host(mmc);
pm_runtime_suspend(&pdev->dev);
clean_up2:
pm_runtime_disable(&pdev->dev);
clk_disable(host->hclk);
clean_up1:
mmc_free_host(mmc);
......@@ -1060,14 +1117,14 @@ static int __devexit sh_mmcif_remove(struct platform_device *pdev)
struct sh_mmcif_host *host = platform_get_drvdata(pdev);
int irq[2];
pm_runtime_get_sync(&pdev->dev);
mmc_remove_host(host->mmc);
sh_mmcif_release_dma(host);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
if (host->addr)
iounmap(host->addr);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
irq[0] = platform_get_irq(pdev, 0);
irq[1] = platform_get_irq(pdev, 1);
......@@ -1078,15 +1135,52 @@ static int __devexit sh_mmcif_remove(struct platform_device *pdev)
clk_disable(host->hclk);
mmc_free_host(host->mmc);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
return 0;
}
#ifdef CONFIG_PM
static int sh_mmcif_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct sh_mmcif_host *host = platform_get_drvdata(pdev);
int ret = mmc_suspend_host(host->mmc);
if (!ret) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
clk_disable(host->hclk);
}
return ret;
}
static int sh_mmcif_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct sh_mmcif_host *host = platform_get_drvdata(pdev);
clk_enable(host->hclk);
return mmc_resume_host(host->mmc);
}
#else
#define sh_mmcif_suspend NULL
#define sh_mmcif_resume NULL
#endif /* CONFIG_PM */
static const struct dev_pm_ops sh_mmcif_dev_pm_ops = {
.suspend = sh_mmcif_suspend,
.resume = sh_mmcif_resume,
};
static struct platform_driver sh_mmcif_driver = {
.probe = sh_mmcif_probe,
.remove = sh_mmcif_remove,
.driver = {
.name = DRIVER_NAME,
.pm = &sh_mmcif_dev_pm_ops,
},
};
......
drivers/mmc/host/sh_mobile_sdhi.c
View file @ 8c1c77ff
......@@ -62,7 +62,7 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
struct tmio_mmc_host *host;
char clk_name[8];
int ret;
int i, irq, ret;
priv = kzalloc(sizeof(struct sh_mobile_sdhi), GFP_KERNEL);
if (priv == NULL) {
......@@ -71,6 +71,7 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
}
mmc_data = &priv->mmc_data;
p->pdata = mmc_data;
snprintf(clk_name, sizeof(clk_name), "sdhi%d", pdev->id);
priv->clk = clk_get(&pdev->dev, clk_name);
......@@ -116,11 +117,36 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
if (ret < 0)
goto eprobe;
pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
(unsigned long)host->ctl, host->irq);
for (i = 0; i < 3; i++) {
irq = platform_get_irq(pdev, i);
if (irq < 0) {
if (i) {
continue;
} else {
ret = irq;
goto eirq;
}
}
ret = request_irq(irq, tmio_mmc_irq, 0,
dev_name(&pdev->dev), host);
if (ret) {
while (i--) {
irq = platform_get_irq(pdev, i);
if (irq >= 0)
free_irq(irq, host);
}
goto eirq;
}
}
dev_info(&pdev->dev, "%s base at 0x%08lx clock rate %u MHz\n",
mmc_hostname(host->mmc), (unsigned long)
(platform_get_resource(pdev,IORESOURCE_MEM, 0)->start),
mmc_data->hclk / 1000000);
return ret;
eirq:
tmio_mmc_host_remove(host);
eprobe:
clk_disable(priv->clk);
clk_put(priv->clk);
......@@ -134,6 +160,16 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev)
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct tmio_mmc_host *host = mmc_priv(mmc);
struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
int i, irq;
p->pdata = NULL;
for (i = 0; i < 3; i++) {
irq = platform_get_irq(pdev, i);
if (irq >= 0)
free_irq(irq, host);
}
tmio_mmc_host_remove(host);
clk_disable(priv->clk);
......@@ -143,10 +179,18 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev)
return 0;
}
static const struct dev_pm_ops tmio_mmc_dev_pm_ops = {
.suspend = tmio_mmc_host_suspend,
.resume = tmio_mmc_host_resume,
.runtime_suspend = tmio_mmc_host_runtime_suspend,
.runtime_resume = tmio_mmc_host_runtime_resume,
};
static struct platform_driver sh_mobile_sdhi_driver = {
.driver = {
.name = "sh_mobile_sdhi",
.owner = THIS_MODULE,
.pm = &tmio_mmc_dev_pm_ops,
},
.probe = sh_mobile_sdhi_probe,
.remove = __devexit_p(sh_mobile_sdhi_remove),
......
drivers/mmc/host/tmio_mmc.c
View file @ 8c1c77ff
......@@ -30,7 +30,7 @@ static int tmio_mmc_suspend(struct platform_device *dev, pm_message_t state)
struct mmc_host *mmc = platform_get_drvdata(dev);
int ret;
ret = mmc_suspend_host(mmc);
ret = tmio_mmc_host_suspend(&dev->dev);
/* Tell MFD core it can disable us now.*/
if (!ret && cell->disable)
......@@ -46,15 +46,12 @@ static int tmio_mmc_resume(struct platform_device *dev)
int ret = 0;
/* Tell the MFD core we are ready to be enabled */
if (cell->resume) {
if (cell->resume)
ret = cell->resume(dev);
if (ret)
goto out;
}
mmc_resume_host(mmc);
if (!ret)
ret = tmio_mmc_host_resume(&dev->dev);
out:
return ret;
}
#else
......@@ -67,7 +64,7 @@ static int __devinit tmio_mmc_probe(struct platform_device *pdev)
const struct mfd_cell *cell = mfd_get_cell(pdev);
struct tmio_mmc_data *pdata;
struct tmio_mmc_host *host;
int ret = -EINVAL;
int ret = -EINVAL, irq;
if (pdev->num_resources != 2)
goto out;
......@@ -76,6 +73,12 @@ static int __devinit tmio_mmc_probe(struct platform_device *pdev)
if (!pdata || !pdata->hclk)
goto out;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
ret = irq;
goto out;
}
/* Tell the MFD core we are ready to be enabled */
if (cell->enable) {
ret = cell->enable(pdev);
......@@ -87,11 +90,18 @@ static int __devinit tmio_mmc_probe(struct platform_device *pdev)
if (ret)
goto cell_disable;
ret = request_irq(irq, tmio_mmc_irq, IRQF_DISABLED |
IRQF_TRIGGER_FALLING, dev_name(&pdev->dev), host);
if (ret)
goto host_remove;
pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
(unsigned long)host->ctl, host->irq);
(unsigned long)host->ctl, irq);
return 0;
host_remove:
tmio_mmc_host_remove(host);
cell_disable:
if (cell->disable)
cell->disable(pdev);
......@@ -107,7 +117,9 @@ static int __devexit tmio_mmc_remove(struct platform_device *pdev)
platform_set_drvdata(pdev, NULL);
if (mmc) {
tmio_mmc_host_remove(mmc_priv(mmc));
struct tmio_mmc_host *host = mmc_priv(mmc);
free_irq(platform_get_irq(pdev, 0), host);
tmio_mmc_host_remove(host);
if (cell->disable)
cell->disable(pdev);
}
......
drivers/mmc/host/tmio_mmc.h
View file @ 8c1c77ff
......@@ -19,6 +19,7 @@
#include <linux/highmem.h>
#include <linux/mmc/tmio.h>
#include <linux/pagemap.h>
#include <linux/spinlock.h>
/* Definitions for values the CTRL_SDIO_STATUS register can take. */
#define TMIO_SDIO_STAT_IOIRQ 0x0001
......@@ -44,13 +45,14 @@ struct tmio_mmc_host {
struct mmc_request *mrq;
struct mmc_data *data;
struct mmc_host *mmc;
int irq;
unsigned int sdio_irq_enabled;
/* Callbacks for clock / power control */
void (*set_pwr)(struct platform_device *host, int state);
void (*set_clk_div)(struct platform_device *host, int state);
int pm_error;
/* pio related stuff */
struct scatterlist *sg_ptr;
struct scatterlist *sg_orig;
......@@ -83,6 +85,7 @@ void tmio_mmc_do_data_irq(struct tmio_mmc_host *host);
void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
irqreturn_t tmio_mmc_irq(int irq, void *devid);
static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg,
unsigned long *flags)
......@@ -120,4 +123,15 @@ static inline void tmio_mmc_release_dma(struct tmio_mmc_host *host)
}
#endif
#ifdef CONFIG_PM
int tmio_mmc_host_suspend(struct device *dev);
int tmio_mmc_host_resume(struct device *dev);
#else
#define tmio_mmc_host_suspend NULL
#define tmio_mmc_host_resume NULL
#endif
int tmio_mmc_host_runtime_suspend(struct device *dev);
int tmio_mmc_host_runtime_resume(struct device *dev);
#endif
drivers/mmc/host/tmio_mmc_dma.c
View file @ 8c1c77ff
......@@ -256,7 +256,10 @@ static bool tmio_mmc_filter(struct dma_chan *chan, void *arg)
void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata)
{
/* We can only either use DMA for both Tx and Rx or not use it at all */
if (pdata->dma) {
if (!pdata->dma)
return;
if (!host->chan_tx && !host->chan_rx) {
dma_cap_mask_t mask;
dma_cap_zero(mask);
......@@ -284,18 +287,18 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
tasklet_init(&host->dma_complete, tmio_mmc_tasklet_fn, (unsigned long)host);
tasklet_init(&host->dma_issue, tmio_mmc_issue_tasklet_fn, (unsigned long)host);
}
tmio_mmc_enable_dma(host, true);
tmio_mmc_enable_dma(host, true);
return;
return;
ebouncebuf:
dma_release_channel(host->chan_rx);
host->chan_rx = NULL;
dma_release_channel(host->chan_rx);
host->chan_rx = NULL;
ereqrx:
dma_release_channel(host->chan_tx);
host->chan_tx = NULL;
return;
}
dma_release_channel(host->chan_tx);
host->chan_tx = NULL;
}
void tmio_mmc_release_dma(struct tmio_mmc_host *host)
......
drivers/mmc/host/tmio_mmc_pio.c
View file @ 8c1c77ff
......@@ -39,6 +39,7 @@
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/scatterlist.h>
#include <linux/workqueue.h>
#include <linux/spinlock.h>
......@@ -243,8 +244,12 @@ static void tmio_mmc_reset_work(struct work_struct *work)
spin_lock_irqsave(&host->lock, flags);
mrq = host->mrq;
/* request already finished */
if (!mrq
/*
* is request already finished? Since we use a non-blocking
* cancel_delayed_work(), it can happen, that a .set_ios() call preempts
* us, so, have to check for IS_ERR(host->mrq)
*/
if (IS_ERR_OR_NULL(mrq)
|| time_is_after_jiffies(host->last_req_ts +
msecs_to_jiffies(2000))) {
spin_unlock_irqrestore(&host->lock, flags);
......@@ -264,16 +269,19 @@ static void tmio_mmc_reset_work(struct work_struct *work)
host->cmd = NULL;
host->data = NULL;
host->mrq = NULL;
host->force_pio = false;
spin_unlock_irqrestore(&host->lock, flags);
tmio_mmc_reset(host);
/* Ready for new calls */
host->mrq = NULL;
mmc_request_done(host->mmc, mrq);
}
/* called with host->lock held, interrupts disabled */
static void tmio_mmc_finish_request(struct tmio_mmc_host *host)
{
struct mmc_request *mrq = host->mrq;
......@@ -281,13 +289,15 @@ static void tmio_mmc_finish_request(struct tmio_mmc_host *host)
if (!mrq)
return;
host->mrq = NULL;
host->cmd = NULL;
host->data = NULL;
host->force_pio = false;
cancel_delayed_work(&host->delayed_reset_work);
host->mrq = NULL;
/* FIXME: mmc_request_done() can schedule! */
mmc_request_done(host->mmc, mrq);
}
......@@ -554,7 +564,7 @@ static void tmio_mmc_cmd_irq(struct tmio_mmc_host *host,
spin_unlock(&host->lock);
}
static irqreturn_t tmio_mmc_irq(int irq, void *devid)
irqreturn_t tmio_mmc_irq(int irq, void *devid)
{
struct tmio_mmc_host *host = devid;
struct tmio_mmc_data *pdata = host->pdata;
......@@ -649,6 +659,7 @@ static irqreturn_t tmio_mmc_irq(int irq, void *devid)
out:
return IRQ_HANDLED;
}
EXPORT_SYMBOL(tmio_mmc_irq);
static int tmio_mmc_start_data(struct tmio_mmc_host *host,
struct mmc_data *data)
......@@ -685,15 +696,27 @@ static int tmio_mmc_start_data(struct tmio_mmc_host *host,
static void tmio_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct tmio_mmc_host *host = mmc_priv(mmc);
unsigned long flags;
int ret;
if (host->mrq)
spin_lock_irqsave(&host->lock, flags);
if (host->mrq) {
pr_debug("request not null\n");
if (IS_ERR(host->mrq)) {
spin_unlock_irqrestore(&host->lock, flags);
mrq->cmd->error = -EAGAIN;
mmc_request_done(mmc, mrq);
return;
}
}
host->last_req_ts = jiffies;
wmb();
host->mrq = mrq;
spin_unlock_irqrestore(&host->lock, flags);
if (mrq->data) {
ret = tmio_mmc_start_data(host, mrq->data);
if (ret)
......@@ -708,8 +731,8 @@ static void tmio_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
}
fail:
host->mrq = NULL;
host->force_pio = false;
host->mrq = NULL;
mrq->cmd->error = ret;
mmc_request_done(mmc, mrq);
}
......@@ -723,19 +746,54 @@ static void tmio_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct tmio_mmc_host *host = mmc_priv(mmc);
struct tmio_mmc_data *pdata = host->pdata;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
if (host->mrq) {
if (IS_ERR(host->mrq)) {
dev_dbg(&host->pdev->dev,
"%s.%d: concurrent .set_ios(), clk %u, mode %u\n",
current->comm, task_pid_nr(current),
ios->clock, ios->power_mode);
host->mrq = ERR_PTR(-EINTR);
} else {
dev_dbg(&host->pdev->dev,
"%s.%d: CMD%u active since %lu, now %lu!\n",
current->comm, task_pid_nr(current),
host->mrq->cmd->opcode, host->last_req_ts, jiffies);
}
spin_unlock_irqrestore(&host->lock, flags);
return;
}
host->mrq = ERR_PTR(-EBUSY);
spin_unlock_irqrestore(&host->lock, flags);
if (ios->clock)
tmio_mmc_set_clock(host, ios->clock);
/* Power sequence - OFF -> UP -> ON */
if (ios->power_mode == MMC_POWER_UP) {
if ((pdata->flags & TMIO_MMC_HAS_COLD_CD) && !pdata->power) {
pm_runtime_get_sync(&host->pdev->dev);
pdata->power = true;
}
/* power up SD bus */
if (host->set_pwr)
host->set_pwr(host->pdev, 1);
} else if (ios->power_mode == MMC_POWER_OFF || !ios->clock) {
/* power down SD bus */
if (ios->power_mode == MMC_POWER_OFF && host->set_pwr)
host->set_pwr(host->pdev, 0);
if (ios->power_mode == MMC_POWER_OFF) {
if (host->set_pwr)
host->set_pwr(host->pdev, 0);
if ((pdata->flags & TMIO_MMC_HAS_COLD_CD) &&
pdata->power) {
pdata->power = false;
pm_runtime_put(&host->pdev->dev);
}
}
tmio_mmc_clk_stop(host);
} else {
/* start bus clock */
......@@ -753,6 +811,12 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
/* Let things settle. delay taken from winCE driver */
udelay(140);
if (PTR_ERR(host->mrq) == -EINTR)
dev_dbg(&host->pdev->dev,
"%s.%d: IOS interrupted: clk %u, mode %u",
current->comm, task_pid_nr(current),
ios->clock, ios->power_mode);
host->mrq = NULL;
}
static int tmio_mmc_get_ro(struct mmc_host *mmc)
......@@ -801,6 +865,7 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
if (!mmc)
return -ENOMEM;
pdata->dev = &pdev->dev;
_host = mmc_priv(mmc);
_host->pdata = pdata;
_host->mmc = mmc;
......@@ -834,24 +899,19 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
else
mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
tmio_mmc_clk_stop(_host);
tmio_mmc_reset(_host);
ret = platform_get_irq(pdev, 0);
pdata->power = false;
pm_runtime_enable(&pdev->dev);
ret = pm_runtime_resume(&pdev->dev);
if (ret < 0)
goto unmap_ctl;
goto pm_disable;
_host->irq = ret;
tmio_mmc_clk_stop(_host);
tmio_mmc_reset(_host);
tmio_mmc_disable_mmc_irqs(_host, TMIO_MASK_ALL);
if (pdata->flags & TMIO_MMC_SDIO_IRQ)
tmio_mmc_enable_sdio_irq(mmc, 0);
ret = request_irq(_host->irq, tmio_mmc_irq, IRQF_DISABLED |
IRQF_TRIGGER_FALLING, dev_name(&pdev->dev), _host);
if (ret)
goto unmap_ctl;
spin_lock_init(&_host->lock);
/* Init delayed work for request timeouts */
......@@ -860,6 +920,10 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
/* See if we also get DMA */
tmio_mmc_request_dma(_host, pdata);
/* We have to keep the device powered for its card detection to work */
if (!(pdata->flags & TMIO_MMC_HAS_COLD_CD))
pm_runtime_get_noresume(&pdev->dev);
mmc_add_host(mmc);
/* Unmask the IRQs we want to know about */
......@@ -874,7 +938,8 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
return 0;
unmap_ctl:
pm_disable:
pm_runtime_disable(&pdev->dev);
iounmap(_host->ctl);
host_free:
mmc_free_host(mmc);
......@@ -885,13 +950,88 @@ EXPORT_SYMBOL(tmio_mmc_host_probe);
void tmio_mmc_host_remove(struct tmio_mmc_host *host)
{
struct platform_device *pdev = host->pdev;
/*
* We don't have to manipulate pdata->power here: if there is a card in
* the slot, the runtime PM is active and our .runtime_resume() will not
* be run. If there is no card in the slot and the platform can suspend
* the controller, the runtime PM is suspended and pdata->power == false,
* so, our .runtime_resume() will not try to detect a card in the slot.
*/
if (host->pdata->flags & TMIO_MMC_HAS_COLD_CD)
pm_runtime_get_sync(&pdev->dev);
mmc_remove_host(host->mmc);
cancel_delayed_work_sync(&host->delayed_reset_work);
tmio_mmc_release_dma(host);
free_irq(host->irq, host);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
iounmap(host->ctl);
mmc_free_host(host->mmc);
}
EXPORT_SYMBOL(tmio_mmc_host_remove);
#ifdef CONFIG_PM
int tmio_mmc_host_suspend(struct device *dev)
{
struct mmc_host *mmc = dev_get_drvdata(dev);
struct tmio_mmc_host *host = mmc_priv(mmc);
int ret = mmc_suspend_host(mmc);
if (!ret)
tmio_mmc_disable_mmc_irqs(host, TMIO_MASK_ALL);
host->pm_error = pm_runtime_put_sync(dev);
return ret;
}
EXPORT_SYMBOL(tmio_mmc_host_suspend);
int tmio_mmc_host_resume(struct device *dev)
{
struct mmc_host *mmc = dev_get_drvdata(dev);
struct tmio_mmc_host *host = mmc_priv(mmc);
/* The MMC core will perform the complete set up */
host->pdata->power = false;
if (!host->pm_error)
pm_runtime_get_sync(dev);
tmio_mmc_reset(mmc_priv(mmc));
tmio_mmc_request_dma(host, host->pdata);
return mmc_resume_host(mmc);
}
EXPORT_SYMBOL(tmio_mmc_host_resume);
#endif /* CONFIG_PM */
int tmio_mmc_host_runtime_suspend(struct device *dev)
{
return 0;
}
EXPORT_SYMBOL(tmio_mmc_host_runtime_suspend);
int tmio_mmc_host_runtime_resume(struct device *dev)
{
struct mmc_host *mmc = dev_get_drvdata(dev);
struct tmio_mmc_host *host = mmc_priv(mmc);
struct tmio_mmc_data *pdata = host->pdata;
tmio_mmc_reset(host);
if (pdata->power) {
/* Only entered after a card-insert interrupt */
tmio_mmc_set_ios(mmc, &mmc->ios);
mmc_detect_change(mmc, msecs_to_jiffies(100));
}
return 0;
}
EXPORT_SYMBOL(tmio_mmc_host_runtime_resume);
MODULE_LICENSE("GPL v2");
drivers/mmc/host/vub300.c 0 → 100644
View file @ 8c1c77ff
/*
* Remote VUB300 SDIO/SDmem Host Controller Driver
*
* Copyright (C) 2010 Elan Digital Systems Limited
*
* based on USB Skeleton driver - 2.2
*
* Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, version 2
*
* VUB300: is a USB 2.0 client device with a single SDIO/SDmem/MMC slot
* Any SDIO/SDmem/MMC device plugged into the VUB300 will appear,
* by virtue of this driver, to have been plugged into a local
* SDIO host controller, similar to, say, a PCI Ricoh controller
* This is because this kernel device driver is both a USB 2.0
* client device driver AND an MMC host controller driver. Thus
* if there is an existing driver for the inserted SDIO/SDmem/MMC
* device then that driver will be used by the kernel to manage
* the device in exactly the same fashion as if it had been
* directly plugged into, say, a local pci bus Ricoh controller
*
* RANT: this driver was written using a display 128x48 - converting it
* to a line width of 80 makes it very difficult to support. In
* particular functions have been broken down into sub functions
* and the original meaningful names have been shortened into
* cryptic ones.
* The problem is that executing a fragment of code subject to
* two conditions means an indentation of 24, thus leaving only
* 56 characters for a C statement. And that is quite ridiculous!
*
* Data types: data passed to/from the VUB300 is fixed to a number of
* bits and driver data fields reflect that limit by using
* u8, u16, u32
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kref.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/mutex.h>
#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/workqueue.h>
#include <linux/ctype.h>
#include <linux/firmware.h>
#include <linux/scatterlist.h>
struct host_controller_info {
u8 info_size;
u16 firmware_version;
u8 number_of_ports;
} __packed;
#define FIRMWARE_BLOCK_BOUNDARY 1024
struct sd_command_header {
u8 header_size;
u8 header_type;
u8 port_number;
u8 command_type; /* Bit7 - Rd/Wr */
u8 command_index;
u8 transfer_size[4]; /* ReadSize + ReadSize */
u8 response_type;
u8 arguments[4];
u8 block_count[2];
u8 block_size[2];
u8 block_boundary[2];
u8 reserved[44]; /* to pad out to 64 bytes */
} __packed;
struct sd_irqpoll_header {
u8 header_size;
u8 header_type;
u8 port_number;
u8 command_type; /* Bit7 - Rd/Wr */
u8 padding[16]; /* don't ask why !! */
u8 poll_timeout_msb;
u8 poll_timeout_lsb;
u8 reserved[42]; /* to pad out to 64 bytes */
} __packed;
struct sd_common_header {
u8 header_size;
u8 header_type;
u8 port_number;
} __packed;
struct sd_response_header {
u8 header_size;
u8 header_type;
u8 port_number;
u8 command_type;
u8 command_index;
u8 command_response[0];
} __packed;
struct sd_status_header {
u8 header_size;
u8 header_type;
u8 port_number;
u16 port_flags;
u32 sdio_clock;
u16 host_header_size;
u16 func_header_size;
u16 ctrl_header_size;
} __packed;
struct sd_error_header {
u8 header_size;
u8 header_type;
u8 port_number;
u8 error_code;
} __packed;
struct sd_interrupt_header {
u8 header_size;
u8 header_type;
u8 port_number;
} __packed;
struct offload_registers_access {
u8 command_byte[4];
u8 Respond_Byte[4];
} __packed;
#define INTERRUPT_REGISTER_ACCESSES 15
struct sd_offloaded_interrupt {
u8 header_size;
u8 header_type;
u8 port_number;
struct offload_registers_access reg[INTERRUPT_REGISTER_ACCESSES];
} __packed;
struct sd_register_header {
u8 header_size;
u8 header_type;
u8 port_number;
u8 command_type;
u8 command_index;
u8 command_response[6];
} __packed;
#define PIGGYBACK_REGISTER_ACCESSES 14
struct sd_offloaded_piggyback {
struct sd_register_header sdio;
struct offload_registers_access reg[PIGGYBACK_REGISTER_ACCESSES];
} __packed;
union sd_response {
struct sd_common_header common;
struct sd_status_header status;
struct sd_error_header error;
struct sd_interrupt_header interrupt;
struct sd_response_header response;
struct sd_offloaded_interrupt irq;
struct sd_offloaded_piggyback pig;
} __packed;
union sd_command {
struct sd_command_header head;
struct sd_irqpoll_header poll;
} __packed;
enum SD_RESPONSE_TYPE {
SDRT_UNSPECIFIED = 0,
SDRT_NONE,
SDRT_1,
SDRT_1B,
SDRT_2,
SDRT_3,
SDRT_4,
SDRT_5,
SDRT_5B,
SDRT_6,
SDRT_7,
};
#define RESPONSE_INTERRUPT 0x01
#define RESPONSE_ERROR 0x02
#define RESPONSE_STATUS 0x03
#define RESPONSE_IRQ_DISABLED 0x05
#define RESPONSE_IRQ_ENABLED 0x06
#define RESPONSE_PIGGYBACKED 0x07
#define RESPONSE_NO_INTERRUPT 0x08
#define RESPONSE_PIG_DISABLED 0x09
#define RESPONSE_PIG_ENABLED 0x0A
#define SD_ERROR_1BIT_TIMEOUT 0x01
#define SD_ERROR_4BIT_TIMEOUT 0x02
#define SD_ERROR_1BIT_CRC_WRONG 0x03
#define SD_ERROR_4BIT_CRC_WRONG 0x04
#define SD_ERROR_1BIT_CRC_ERROR 0x05
#define SD_ERROR_4BIT_CRC_ERROR 0x06
#define SD_ERROR_NO_CMD_ENDBIT 0x07
#define SD_ERROR_NO_1BIT_DATEND 0x08
#define SD_ERROR_NO_4BIT_DATEND 0x09
#define SD_ERROR_1BIT_UNEXPECTED_TIMEOUT 0x0A
#define SD_ERROR_4BIT_UNEXPECTED_TIMEOUT 0x0B
#define SD_ERROR_ILLEGAL_COMMAND 0x0C
#define SD_ERROR_NO_DEVICE 0x0D
#define SD_ERROR_TRANSFER_LENGTH 0x0E
#define SD_ERROR_1BIT_DATA_TIMEOUT 0x0F
#define SD_ERROR_4BIT_DATA_TIMEOUT 0x10
#define SD_ERROR_ILLEGAL_STATE 0x11
#define SD_ERROR_UNKNOWN_ERROR 0x12
#define SD_ERROR_RESERVED_ERROR 0x13
#define SD_ERROR_INVALID_FUNCTION 0x14
#define SD_ERROR_OUT_OF_RANGE 0x15
#define SD_ERROR_STAT_CMD 0x16
#define SD_ERROR_STAT_DATA 0x17
#define SD_ERROR_STAT_CMD_TIMEOUT 0x18
#define SD_ERROR_SDCRDY_STUCK 0x19
#define SD_ERROR_UNHANDLED 0x1A
#define SD_ERROR_OVERRUN 0x1B
#define SD_ERROR_PIO_TIMEOUT 0x1C
#define FUN(c) (0x000007 & (c->arg>>28))
#define REG(c) (0x01FFFF & (c->arg>>9))
static int limit_speed_to_24_MHz;
module_param(limit_speed_to_24_MHz, bool, 0644);
MODULE_PARM_DESC(limit_speed_to_24_MHz, "Limit Max SDIO Clock Speed to 24 MHz");
static int pad_input_to_usb_pkt;
module_param(pad_input_to_usb_pkt, bool, 0644);
MODULE_PARM_DESC(pad_input_to_usb_pkt,
"Pad USB data input transfers to whole USB Packet");
static int disable_offload_processing;
module_param(disable_offload_processing, bool, 0644);
MODULE_PARM_DESC(disable_offload_processing, "Disable Offload Processing");
static int force_1_bit_data_xfers;
module_param(force_1_bit_data_xfers, bool, 0644);
MODULE_PARM_DESC(force_1_bit_data_xfers,
"Force SDIO Data Transfers to 1-bit Mode");
static int force_polling_for_irqs;
module_param(force_polling_for_irqs, bool, 0644);
MODULE_PARM_DESC(force_polling_for_irqs, "Force Polling for SDIO interrupts");
static int firmware_irqpoll_timeout = 1024;
module_param(firmware_irqpoll_timeout, int, 0644);
MODULE_PARM_DESC(firmware_irqpoll_timeout, "VUB300 firmware irqpoll timeout");
static int force_max_req_size = 128;
module_param(force_max_req_size, int, 0644);
MODULE_PARM_DESC(force_max_req_size, "set max request size in kBytes");
#ifdef SMSC_DEVELOPMENT_BOARD
static int firmware_rom_wait_states = 0x04;
#else
static int firmware_rom_wait_states = 0x1C;
#endif
module_param(firmware_rom_wait_states, bool, 0644);
MODULE_PARM_DESC(firmware_rom_wait_states,
"ROM wait states byte=RRRIIEEE (Reserved Internal External)");
#define ELAN_VENDOR_ID 0x2201
#define VUB300_VENDOR_ID 0x0424
#define VUB300_PRODUCT_ID 0x012C
static struct usb_device_id vub300_table[] = {
{USB_DEVICE(ELAN_VENDOR_ID, VUB300_PRODUCT_ID)},
{USB_DEVICE(VUB300_VENDOR_ID, VUB300_PRODUCT_ID)},
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, vub300_table);
static struct workqueue_struct *cmndworkqueue;
static struct workqueue_struct *pollworkqueue;
static struct workqueue_struct *deadworkqueue;
static inline int interface_to_InterfaceNumber(struct usb_interface *interface)
{
if (!interface)
return -1;
if (!interface->cur_altsetting)
return -1;
return interface->cur_altsetting->desc.bInterfaceNumber;
}
struct sdio_register {
unsigned func_num:3;
unsigned sdio_reg:17;
unsigned activate:1;
unsigned prepared:1;
unsigned regvalue:8;
unsigned response:8;
unsigned sparebit:26;
};
struct vub300_mmc_host {
struct usb_device *udev;
struct usb_interface *interface;
struct kref kref;
struct mutex cmd_mutex;
struct mutex irq_mutex;
char vub_name[3 + (9 * 8) + 4 + 1]; /* max of 7 sdio fn's */
u8 cmnd_out_ep; /* EndPoint for commands */
u8 cmnd_res_ep; /* EndPoint for responses */
u8 data_out_ep; /* EndPoint for out data */
u8 data_inp_ep; /* EndPoint for inp data */
bool card_powered;
bool card_present;
bool read_only;
bool large_usb_packets;
bool app_spec; /* ApplicationSpecific */
bool irq_enabled; /* by the MMC CORE */
bool irq_disabled; /* in the firmware */
unsigned bus_width:4;
u8 total_offload_count;
u8 dynamic_register_count;
u8 resp_len;
u32 datasize;
int errors;
int usb_transport_fail;
int usb_timed_out;
int irqs_queued;
struct sdio_register sdio_register[16];
struct offload_interrupt_function_register {
#define MAXREGBITS 4
#define MAXREGS (1<<MAXREGBITS)
#define MAXREGMASK (MAXREGS-1)
u8 offload_count;
u32 offload_point;
struct offload_registers_access reg[MAXREGS];
} fn[8];
u16 fbs[8]; /* Function Block Size */
struct mmc_command *cmd;
struct mmc_request *req;
struct mmc_data *data;
struct mmc_host *mmc;
struct urb *urb;
struct urb *command_out_urb;
struct urb *command_res_urb;
struct completion command_complete;
struct completion irqpoll_complete;
union sd_command cmnd;
union sd_response resp;
struct timer_list sg_transfer_timer;
struct usb_sg_request sg_request;
struct timer_list inactivity_timer;
struct work_struct deadwork;
struct work_struct cmndwork;
struct delayed_work pollwork;
struct host_controller_info hc_info;
struct sd_status_header system_port_status;
u8 padded_buffer[64];
};
#define kref_to_vub300_mmc_host(d) container_of(d, struct vub300_mmc_host, kref)
#define SET_TRANSFER_PSEUDOCODE 21
#define SET_INTERRUPT_PSEUDOCODE 20
#define SET_FAILURE_MODE 18
#define SET_ROM_WAIT_STATES 16
#define SET_IRQ_ENABLE 13
#define SET_CLOCK_SPEED 11
#define SET_FUNCTION_BLOCK_SIZE 9
#define SET_SD_DATA_MODE 6
#define SET_SD_POWER 4
#define ENTER_DFU_MODE 3
#define GET_HC_INF0 1
#define GET_SYSTEM_PORT_STATUS 0
static void vub300_delete(struct kref *kref)
{ /* kref callback - softirq */
struct vub300_mmc_host *vub300 = kref_to_vub300_mmc_host(kref);
struct mmc_host *mmc = vub300->mmc;
usb_free_urb(vub300->command_out_urb);
vub300->command_out_urb = NULL;
usb_free_urb(vub300->command_res_urb);
vub300->command_res_urb = NULL;
usb_put_dev(vub300->udev);
mmc_free_host(mmc);
/*
* and hence also frees vub300
* which is contained at the end of struct mmc
*/
}
static void vub300_queue_cmnd_work(struct vub300_mmc_host *vub300)
{
kref_get(&vub300->kref);
if (queue_work(cmndworkqueue, &vub300->cmndwork)) {
/*
* then the cmndworkqueue was not previously
* running and the above get ref is obvious
* required and will be put when the thread
* terminates by a specific call
*/
} else {
/*
* the cmndworkqueue was already running from
* a previous invocation and thus to keep the
* kref counts correct we must undo the get
*/
kref_put(&vub300->kref, vub300_delete);
}
}
static void vub300_queue_poll_work(struct vub300_mmc_host *vub300, int delay)
{
kref_get(&vub300->kref);
if (queue_delayed_work(pollworkqueue, &vub300->pollwork, delay)) {
/*
* then the pollworkqueue was not previously
* running and the above get ref is obvious
* required and will be put when the thread
* terminates by a specific call
*/
} else {
/*
* the pollworkqueue was already running from
* a previous invocation and thus to keep the
* kref counts correct we must undo the get
*/
kref_put(&vub300->kref, vub300_delete);
}
}
static void vub300_queue_dead_work(struct vub300_mmc_host *vub300)
{
kref_get(&vub300->kref);
if (queue_work(deadworkqueue, &vub300->deadwork)) {
/*
* then the deadworkqueue was not previously
* running and the above get ref is obvious
* required and will be put when the thread
* terminates by a specific call
*/
} else {
/*
* the deadworkqueue was already running from
* a previous invocation and thus to keep the
* kref counts correct we must undo the get
*/
kref_put(&vub300->kref, vub300_delete);
}
}
static void irqpoll_res_completed(struct urb *urb)
{ /* urb completion handler - hardirq */
struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context;
if (urb->status)
vub300->usb_transport_fail = urb->status;
complete(&vub300->irqpoll_complete);
}
static void irqpoll_out_completed(struct urb *urb)
{ /* urb completion handler - hardirq */
struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context;
if (urb->status) {
vub300->usb_transport_fail = urb->status;
complete(&vub300->irqpoll_complete);
return;
} else {
int ret;
unsigned int pipe =
usb_rcvbulkpipe(vub300->udev, vub300->cmnd_res_ep);
usb_fill_bulk_urb(vub300->command_res_urb, vub300->udev, pipe,
&vub300->resp, sizeof(vub300->resp),
irqpoll_res_completed, vub300);
vub300->command_res_urb->actual_length = 0;
ret = usb_submit_urb(vub300->command_res_urb, GFP_ATOMIC);
if (ret) {
vub300->usb_transport_fail = ret;
complete(&vub300->irqpoll_complete);
}
return;
}
}
static void send_irqpoll(struct vub300_mmc_host *vub300)
{
/* cmd_mutex is held by vub300_pollwork_thread */
int retval;
int timeout = 0xFFFF & (0x0001FFFF - firmware_irqpoll_timeout);
vub300->cmnd.poll.header_size = 22;
vub300->cmnd.poll.header_type = 1;
vub300->cmnd.poll.port_number = 0;
vub300->cmnd.poll.command_type = 2;
vub300->cmnd.poll.poll_timeout_lsb = 0xFF & (unsigned)timeout;
vub300->cmnd.poll.poll_timeout_msb = 0xFF & (unsigned)(timeout >> 8);
usb_fill_bulk_urb(vub300->command_out_urb, vub300->udev,
usb_sndbulkpipe(vub300->udev, vub300->cmnd_out_ep)
, &vub300->cmnd, sizeof(vub300->cmnd)
, irqpoll_out_completed, vub300);
retval = usb_submit_urb(vub300->command_out_urb, GFP_KERNEL);
if (0 > retval) {
vub300->usb_transport_fail = retval;
vub300_queue_poll_work(vub300, 1);
complete(&vub300->irqpoll_complete);
return;
} else {
return;
}
}
static void new_system_port_status(struct vub300_mmc_host *vub300)
{
int old_card_present = vub300->card_present;
int new_card_present =
(0x0001 & vub300->system_port_status.port_flags) ? 1 : 0;
vub300->read_only =
(0x0010 & vub300->system_port_status.port_flags) ? 1 : 0;
if (new_card_present && !old_card_present) {
dev_info(&vub300->udev->dev, "card just inserted\n");
vub300->card_present = 1;
vub300->bus_width = 0;
if (disable_offload_processing)
strncpy(vub300->vub_name, "EMPTY Processing Disabled",
sizeof(vub300->vub_name));
else
vub300->vub_name[0] = 0;
mmc_detect_change(vub300->mmc, 1);
} else if (!new_card_present && old_card_present) {
dev_info(&vub300->udev->dev, "card just ejected\n");
vub300->card_present = 0;
mmc_detect_change(vub300->mmc, 0);
} else {
/* no change */
}
}
static void __add_offloaded_reg_to_fifo(struct vub300_mmc_host *vub300,
struct offload_registers_access
*register_access, u8 func)
{
u8 r = vub300->fn[func].offload_point + vub300->fn[func].offload_count;
memcpy(&vub300->fn[func].reg[MAXREGMASK & r], register_access,
sizeof(struct offload_registers_access));
vub300->fn[func].offload_count += 1;
vub300->total_offload_count += 1;
}
static void add_offloaded_reg(struct vub300_mmc_host *vub300,
struct offload_registers_access *register_access)
{
u32 Register = ((0x03 & register_access->command_byte[0]) << 15)
| ((0xFF & register_access->command_byte[1]) << 7)
| ((0xFE & register_access->command_byte[2]) >> 1);
u8 func = ((0x70 & register_access->command_byte[0]) >> 4);
u8 regs = vub300->dynamic_register_count;
u8 i = 0;
while (0 < regs-- && 1 == vub300->sdio_register[i].activate) {
if (vub300->sdio_register[i].func_num == func &&
vub300->sdio_register[i].sdio_reg == Register) {
if (vub300->sdio_register[i].prepared == 0)
vub300->sdio_register[i].prepared = 1;
vub300->sdio_register[i].response =
register_access->Respond_Byte[2];
vub300->sdio_register[i].regvalue =
register_access->Respond_Byte[3];
return;
} else {
i += 1;
continue;
}
};
__add_offloaded_reg_to_fifo(vub300, register_access, func);
}
static void check_vub300_port_status(struct vub300_mmc_host *vub300)
{
/*
* cmd_mutex is held by vub300_pollwork_thread,
* vub300_deadwork_thread or vub300_cmndwork_thread
*/
int retval;
retval =
usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0),
GET_SYSTEM_PORT_STATUS,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x0000, 0x0000, &vub300->system_port_status,
sizeof(vub300->system_port_status), HZ);
if (sizeof(vub300->system_port_status) == retval)
new_system_port_status(vub300);
}
static void __vub300_irqpoll_response(struct vub300_mmc_host *vub300)
{
/* cmd_mutex is held by vub300_pollwork_thread */
if (vub300->command_res_urb->actual_length == 0)
return;
switch (vub300->resp.common.header_type) {
case RESPONSE_INTERRUPT:
mutex_lock(&vub300->irq_mutex);
if (vub300->irq_enabled)
mmc_signal_sdio_irq(vub300->mmc);
else
vub300->irqs_queued += 1;
vub300->irq_disabled = 1;
mutex_unlock(&vub300->irq_mutex);
break;
case RESPONSE_ERROR:
if (vub300->resp.error.error_code == SD_ERROR_NO_DEVICE)
check_vub300_port_status(vub300);
break;
case RESPONSE_STATUS:
vub300->system_port_status = vub300->resp.status;
new_system_port_status(vub300);
if (!vub300->card_present)
vub300_queue_poll_work(vub300, HZ / 5);
break;
case RESPONSE_IRQ_DISABLED:
{
int offloaded_data_length = vub300->resp.common.header_size - 3;
int register_count = offloaded_data_length >> 3;
int ri = 0;
while (register_count--) {
add_offloaded_reg(vub300, &vub300->resp.irq.reg[ri]);
ri += 1;
}
mutex_lock(&vub300->irq_mutex);
if (vub300->irq_enabled)
mmc_signal_sdio_irq(vub300->mmc);
else
vub300->irqs_queued += 1;
vub300->irq_disabled = 1;
mutex_unlock(&vub300->irq_mutex);
break;
}
case RESPONSE_IRQ_ENABLED:
{
int offloaded_data_length = vub300->resp.common.header_size - 3;
int register_count = offloaded_data_length >> 3;
int ri = 0;
while (register_count--) {
add_offloaded_reg(vub300, &vub300->resp.irq.reg[ri]);
ri += 1;
}
mutex_lock(&vub300->irq_mutex);
if (vub300->irq_enabled)
mmc_signal_sdio_irq(vub300->mmc);
else if (vub300->irqs_queued)
vub300->irqs_queued += 1;
else
vub300->irqs_queued += 1;
vub300->irq_disabled = 0;
mutex_unlock(&vub300->irq_mutex);
break;
}
case RESPONSE_NO_INTERRUPT:
vub300_queue_poll_work(vub300, 1);
break;
default:
break;
}
}
static void __do_poll(struct vub300_mmc_host *vub300)
{
/* cmd_mutex is held by vub300_pollwork_thread */
long commretval;
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
init_completion(&vub300->irqpoll_complete);
send_irqpoll(vub300);
commretval = wait_for_completion_timeout(&vub300->irqpoll_complete,
msecs_to_jiffies(500));
if (vub300->usb_transport_fail) {
/* no need to do anything */
} else if (commretval == 0) {
vub300->usb_timed_out = 1;
usb_kill_urb(vub300->command_out_urb);
usb_kill_urb(vub300->command_res_urb);
} else if (commretval < 0) {
vub300_queue_poll_work(vub300, 1);
} else { /* commretval > 0 */
__vub300_irqpoll_response(vub300);
}
}
/* this thread runs only when the driver
* is trying to poll the device for an IRQ
*/
static void vub300_pollwork_thread(struct work_struct *work)
{ /* NOT irq */
struct vub300_mmc_host *vub300 = container_of(work,
struct vub300_mmc_host, pollwork.work);
if (!vub300->interface) {
kref_put(&vub300->kref, vub300_delete);
return;
}
mutex_lock(&vub300->cmd_mutex);
if (vub300->cmd) {
vub300_queue_poll_work(vub300, 1);
} else if (!vub300->card_present) {
/* no need to do anything */
} else { /* vub300->card_present */
mutex_lock(&vub300->irq_mutex);
if (!vub300->irq_enabled) {
mutex_unlock(&vub300->irq_mutex);
} else if (vub300->irqs_queued) {
vub300->irqs_queued -= 1;
mmc_signal_sdio_irq(vub300->mmc);
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
mutex_unlock(&vub300->irq_mutex);
} else { /* NOT vub300->irqs_queued */
mutex_unlock(&vub300->irq_mutex);
__do_poll(vub300);
}
}
mutex_unlock(&vub300->cmd_mutex);
kref_put(&vub300->kref, vub300_delete);
}
static void vub300_deadwork_thread(struct work_struct *work)
{ /* NOT irq */
struct vub300_mmc_host *vub300 =
container_of(work, struct vub300_mmc_host, deadwork);
if (!vub300->interface) {
kref_put(&vub300->kref, vub300_delete);
return;
}
mutex_lock(&vub300->cmd_mutex);
if (vub300->cmd) {
/*
* a command got in as the inactivity
* timer expired - so we just let the
* processing of the command show if
* the device is dead
*/
} else if (vub300->card_present) {
check_vub300_port_status(vub300);
} else if (vub300->mmc && vub300->mmc->card &&
mmc_card_present(vub300->mmc->card)) {
/*
* the MMC core must not have responded
* to the previous indication - lets
* hope that it eventually does so we
* will just ignore this for now
*/
} else {
check_vub300_port_status(vub300);
}
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
mutex_unlock(&vub300->cmd_mutex);
kref_put(&vub300->kref, vub300_delete);
}
static void vub300_inactivity_timer_expired(unsigned long data)
{ /* softirq */
struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)data;
if (!vub300->interface) {
kref_put(&vub300->kref, vub300_delete);
} else if (vub300->cmd) {
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
} else {
vub300_queue_dead_work(vub300);
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
}
}
static int vub300_response_error(u8 error_code)
{
switch (error_code) {
case SD_ERROR_PIO_TIMEOUT:
case SD_ERROR_1BIT_TIMEOUT:
case SD_ERROR_4BIT_TIMEOUT:
return -ETIMEDOUT;
case SD_ERROR_STAT_DATA:
case SD_ERROR_OVERRUN:
case SD_ERROR_STAT_CMD:
case SD_ERROR_STAT_CMD_TIMEOUT:
case SD_ERROR_SDCRDY_STUCK:
case SD_ERROR_UNHANDLED:
case SD_ERROR_1BIT_CRC_WRONG:
case SD_ERROR_4BIT_CRC_WRONG:
case SD_ERROR_1BIT_CRC_ERROR:
case SD_ERROR_4BIT_CRC_ERROR:
case SD_ERROR_NO_CMD_ENDBIT:
case SD_ERROR_NO_1BIT_DATEND:
case SD_ERROR_NO_4BIT_DATEND:
case SD_ERROR_1BIT_DATA_TIMEOUT:
case SD_ERROR_4BIT_DATA_TIMEOUT:
case SD_ERROR_1BIT_UNEXPECTED_TIMEOUT:
case SD_ERROR_4BIT_UNEXPECTED_TIMEOUT:
return -EILSEQ;
case 33:
return -EILSEQ;
case SD_ERROR_ILLEGAL_COMMAND:
return -EINVAL;
case SD_ERROR_NO_DEVICE:
return -ENOMEDIUM;
default:
return -ENODEV;
}
}
static void command_res_completed(struct urb *urb)
{ /* urb completion handler - hardirq */
struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context;
if (urb->status) {
/* we have to let the initiator handle the error */
} else if (vub300->command_res_urb->actual_length == 0) {
/*
* we have seen this happen once or twice and
* we suspect a buggy USB host controller
*/
} else if (!vub300->data) {
/* this means that the command (typically CMD52) suceeded */
} else if (vub300->resp.common.header_type != 0x02) {
/*
* this is an error response from the VUB300 chip
* and we let the initiator handle it
*/
} else if (vub300->urb) {
vub300->cmd->error =
vub300_response_error(vub300->resp.error.error_code);
usb_unlink_urb(vub300->urb);
} else {
vub300->cmd->error =
vub300_response_error(vub300->resp.error.error_code);
usb_sg_cancel(&vub300->sg_request);
}
complete(&vub300->command_complete); /* got_response_in */
}
static void command_out_completed(struct urb *urb)
{ /* urb completion handler - hardirq */
struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context;
if (urb->status) {
complete(&vub300->command_complete);
} else {
int ret;
unsigned int pipe =
usb_rcvbulkpipe(vub300->udev, vub300->cmnd_res_ep);
usb_fill_bulk_urb(vub300->command_res_urb, vub300->udev, pipe,
&vub300->resp, sizeof(vub300->resp),
command_res_completed, vub300);
vub300->command_res_urb->actual_length = 0;
ret = usb_submit_urb(vub300->command_res_urb, GFP_ATOMIC);
if (ret == 0) {
/*
* the urb completion handler will call
* our completion handler
*/
} else {
/*
* and thus we only call it directly
* when it will not be called
*/
complete(&vub300->command_complete);
}
}
}
/*
* the STUFF bits are masked out for the comparisons
*/
static void snoop_block_size_and_bus_width(struct vub300_mmc_host *vub300,
u32 cmd_arg)
{
if ((0xFBFFFE00 & cmd_arg) == 0x80022200)
vub300->fbs[1] = (cmd_arg << 8) | (0x00FF & vub300->fbs[1]);
else if ((0xFBFFFE00 & cmd_arg) == 0x80022000)
vub300->fbs[1] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[1]);
else if ((0xFBFFFE00 & cmd_arg) == 0x80042200)
vub300->fbs[2] = (cmd_arg << 8) | (0x00FF & vub300->fbs[2]);
else if ((0xFBFFFE00 & cmd_arg) == 0x80042000)
vub300->fbs[2] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[2]);
else if ((0xFBFFFE00 & cmd_arg) == 0x80062200)
vub300->fbs[3] = (cmd_arg << 8) | (0x00FF & vub300->fbs[3]);
else if ((0xFBFFFE00 & cmd_arg) == 0x80062000)
vub300->fbs[3] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[3]);
else if ((0xFBFFFE00 & cmd_arg) == 0x80082200)
vub300->fbs[4] = (cmd_arg << 8) | (0x00FF & vub300->fbs[4]);
else if ((0xFBFFFE00 & cmd_arg) == 0x80082000)
vub300->fbs[4] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[4]);
else if ((0xFBFFFE00 & cmd_arg) == 0x800A2200)
vub300->fbs[5] = (cmd_arg << 8) | (0x00FF & vub300->fbs[5]);
else if ((0xFBFFFE00 & cmd_arg) == 0x800A2000)
vub300->fbs[5] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[5]);
else if ((0xFBFFFE00 & cmd_arg) == 0x800C2200)
vub300->fbs[6] = (cmd_arg << 8) | (0x00FF & vub300->fbs[6]);
else if ((0xFBFFFE00 & cmd_arg) == 0x800C2000)
vub300->fbs[6] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[6]);
else if ((0xFBFFFE00 & cmd_arg) == 0x800E2200)
vub300->fbs[7] = (cmd_arg << 8) | (0x00FF & vub300->fbs[7]);
else if ((0xFBFFFE00 & cmd_arg) == 0x800E2000)
vub300->fbs[7] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[7]);
else if ((0xFBFFFE03 & cmd_arg) == 0x80000E00)
vub300->bus_width = 1;
else if ((0xFBFFFE03 & cmd_arg) == 0x80000E02)
vub300->bus_width = 4;
}
static void send_command(struct vub300_mmc_host *vub300)
{
/* cmd_mutex is held by vub300_cmndwork_thread */
struct mmc_command *cmd = vub300->cmd;
struct mmc_data *data = vub300->data;
int retval;
int i;
u8 response_type;
if (vub300->app_spec) {
switch (cmd->opcode) {
case 6:
response_type = SDRT_1;
vub300->resp_len = 6;
if (0x00000000 == (0x00000003 & cmd->arg))
vub300->bus_width = 1;
else if (0x00000002 == (0x00000003 & cmd->arg))
vub300->bus_width = 4;
else
dev_err(&vub300->udev->dev,
"unexpected ACMD6 bus_width=%d\n",
0x00000003 & cmd->arg);
break;
case 13:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
case 22:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
case 23:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
case 41:
response_type = SDRT_3;
vub300->resp_len = 6;
break;
case 42:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
case 51:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
case 55:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
default:
vub300->resp_len = 0;
cmd->error = -EINVAL;
complete(&vub300->command_complete);
return;
}
vub300->app_spec = 0;
} else {
switch (cmd->opcode) {
case 0:
response_type = SDRT_NONE;
vub300->resp_len = 0;
break;
case 1:
response_type = SDRT_3;
vub300->resp_len = 6;
break;
case 2:
response_type = SDRT_2;
vub300->resp_len = 17;
break;
case 3:
response_type = SDRT_6;
vub300->resp_len = 6;
break;
case 4:
response_type = SDRT_NONE;
vub300->resp_len = 0;
break;
case 5:
response_type = SDRT_4;
vub300->resp_len = 6;
break;
case 6:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
case 7:
response_type = SDRT_1B;
vub300->resp_len = 6;
break;
case 8:
response_type = SDRT_7;
vub300->resp_len = 6;
break;
case 9:
response_type = SDRT_2;
vub300->resp_len = 17;
break;
case 10:
response_type = SDRT_2;
vub300->resp_len = 17;
break;
case 12:
response_type = SDRT_1B;
vub300->resp_len = 6;
break;
case 13:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
case 15:
response_type = SDRT_NONE;
vub300->resp_len = 0;
break;
case 16:
for (i = 0; i < ARRAY_SIZE(vub300->fbs); i++)
vub300->fbs[i] = 0xFFFF & cmd->arg;
response_type = SDRT_1;
vub300->resp_len = 6;
break;
case 17:
case 18:
case 24:
case 25:
case 27:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
case 28:
case 29:
response_type = SDRT_1B;
vub300->resp_len = 6;
break;
case 30:
case 32:
case 33:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
case 38:
response_type = SDRT_1B;
vub300->resp_len = 6;
break;
case 42:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
case 52:
response_type = SDRT_5;
vub300->resp_len = 6;
snoop_block_size_and_bus_width(vub300, cmd->arg);
break;
case 53:
response_type = SDRT_5;
vub300->resp_len = 6;
break;
case 55:
response_type = SDRT_1;
vub300->resp_len = 6;
vub300->app_spec = 1;
break;
case 56:
response_type = SDRT_1;
vub300->resp_len = 6;
break;
default:
vub300->resp_len = 0;
cmd->error = -EINVAL;
complete(&vub300->command_complete);
return;
}
}
/*
* it is a shame that we can not use "sizeof(struct sd_command_header)"
* this is because the packet _must_ be padded to 64 bytes
*/
vub300->cmnd.head.header_size = 20;
vub300->cmnd.head.header_type = 0x00;
vub300->cmnd.head.port_number = 0; /* "0" means port 1 */
vub300->cmnd.head.command_type = 0x00; /* standard read command */
vub300->cmnd.head.response_type = response_type;
vub300->cmnd.head.command_index = cmd->opcode;
vub300->cmnd.head.arguments[0] = cmd->arg >> 24;
vub300->cmnd.head.arguments[1] = cmd->arg >> 16;
vub300->cmnd.head.arguments[2] = cmd->arg >> 8;
vub300->cmnd.head.arguments[3] = cmd->arg >> 0;
if (cmd->opcode == 52) {
int fn = 0x7 & (cmd->arg >> 28);
vub300->cmnd.head.block_count[0] = 0;
vub300->cmnd.head.block_count[1] = 0;
vub300->cmnd.head.block_size[0] = (vub300->fbs[fn] >> 8) & 0xFF;
vub300->cmnd.head.block_size[1] = (vub300->fbs[fn] >> 0) & 0xFF;
vub300->cmnd.head.command_type = 0x00;
vub300->cmnd.head.transfer_size[0] = 0;
vub300->cmnd.head.transfer_size[1] = 0;
vub300->cmnd.head.transfer_size[2] = 0;
vub300->cmnd.head.transfer_size[3] = 0;
} else if (!data) {
vub300->cmnd.head.block_count[0] = 0;
vub300->cmnd.head.block_count[1] = 0;
vub300->cmnd.head.block_size[0] = (vub300->fbs[0] >> 8) & 0xFF;
vub300->cmnd.head.block_size[1] = (vub300->fbs[0] >> 0) & 0xFF;
vub300->cmnd.head.command_type = 0x00;
vub300->cmnd.head.transfer_size[0] = 0;
vub300->cmnd.head.transfer_size[1] = 0;
vub300->cmnd.head.transfer_size[2] = 0;
vub300->cmnd.head.transfer_size[3] = 0;
} else if (cmd->opcode == 53) {
int fn = 0x7 & (cmd->arg >> 28);
if (0x08 & vub300->cmnd.head.arguments[0]) { /* BLOCK MODE */
vub300->cmnd.head.block_count[0] =
(data->blocks >> 8) & 0xFF;
vub300->cmnd.head.block_count[1] =
(data->blocks >> 0) & 0xFF;
vub300->cmnd.head.block_size[0] =
(data->blksz >> 8) & 0xFF;
vub300->cmnd.head.block_size[1] =
(data->blksz >> 0) & 0xFF;
} else { /* BYTE MODE */
vub300->cmnd.head.block_count[0] = 0;
vub300->cmnd.head.block_count[1] = 0;
vub300->cmnd.head.block_size[0] =
(vub300->datasize >> 8) & 0xFF;
vub300->cmnd.head.block_size[1] =
(vub300->datasize >> 0) & 0xFF;
}
vub300->cmnd.head.command_type =
(MMC_DATA_READ & data->flags) ? 0x00 : 0x80;
vub300->cmnd.head.transfer_size[0] =
(vub300->datasize >> 24) & 0xFF;
vub300->cmnd.head.transfer_size[1] =
(vub300->datasize >> 16) & 0xFF;
vub300->cmnd.head.transfer_size[2] =
(vub300->datasize >> 8) & 0xFF;
vub300->cmnd.head.transfer_size[3] =
(vub300->datasize >> 0) & 0xFF;
if (vub300->datasize < vub300->fbs[fn]) {
vub300->cmnd.head.block_count[0] = 0;
vub300->cmnd.head.block_count[1] = 0;
}
} else {
vub300->cmnd.head.block_count[0] = (data->blocks >> 8) & 0xFF;
vub300->cmnd.head.block_count[1] = (data->blocks >> 0) & 0xFF;
vub300->cmnd.head.block_size[0] = (data->blksz >> 8) & 0xFF;
vub300->cmnd.head.block_size[1] = (data->blksz >> 0) & 0xFF;
vub300->cmnd.head.command_type =
(MMC_DATA_READ & data->flags) ? 0x00 : 0x80;
vub300->cmnd.head.transfer_size[0] =
(vub300->datasize >> 24) & 0xFF;
vub300->cmnd.head.transfer_size[1] =
(vub300->datasize >> 16) & 0xFF;
vub300->cmnd.head.transfer_size[2] =
(vub300->datasize >> 8) & 0xFF;
vub300->cmnd.head.transfer_size[3] =
(vub300->datasize >> 0) & 0xFF;
if (vub300->datasize < vub300->fbs[0]) {
vub300->cmnd.head.block_count[0] = 0;
vub300->cmnd.head.block_count[1] = 0;
}
}
if (vub300->cmnd.head.block_size[0] || vub300->cmnd.head.block_size[1]) {
u16 block_size = vub300->cmnd.head.block_size[1] |
(vub300->cmnd.head.block_size[0] << 8);
u16 block_boundary = FIRMWARE_BLOCK_BOUNDARY -
(FIRMWARE_BLOCK_BOUNDARY % block_size);
vub300->cmnd.head.block_boundary[0] =
(block_boundary >> 8) & 0xFF;
vub300->cmnd.head.block_boundary[1] =
(block_boundary >> 0) & 0xFF;
} else {
vub300->cmnd.head.block_boundary[0] = 0;
vub300->cmnd.head.block_boundary[1] = 0;
}
usb_fill_bulk_urb(vub300->command_out_urb, vub300->udev,
usb_sndbulkpipe(vub300->udev, vub300->cmnd_out_ep),
&vub300->cmnd, sizeof(vub300->cmnd),
command_out_completed, vub300);
retval = usb_submit_urb(vub300->command_out_urb, GFP_KERNEL);
if (retval < 0) {
cmd->error = retval;
complete(&vub300->command_complete);
return;
} else {
return;
}
}
/*
* timer callback runs in atomic mode
* so it cannot call usb_kill_urb()
*/
static void vub300_sg_timed_out(unsigned long data)
{
struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)data;
vub300->usb_timed_out = 1;
usb_sg_cancel(&vub300->sg_request);
usb_unlink_urb(vub300->command_out_urb);
usb_unlink_urb(vub300->command_res_urb);
}
static u16 roundup_to_multiple_of_64(u16 number)
{
return 0xFFC0 & (0x3F + number);
}
/*
* this is a separate function to solve the 80 column width restriction
*/
static void __download_offload_pseudocode(struct vub300_mmc_host *vub300,
const struct firmware *fw)
{
u8 register_count = 0;
u16 ts = 0;
u16 interrupt_size = 0;
const u8 *data = fw->data;
int size = fw->size;
u8 c;
dev_info(&vub300->udev->dev, "using %s for SDIO offload processing\n",
vub300->vub_name);
do {
c = *data++;
} while (size-- && c); /* skip comment */
dev_info(&vub300->udev->dev, "using offload firmware %s %s\n", fw->data,
vub300->vub_name);
if (size < 4) {
dev_err(&vub300->udev->dev,
"corrupt offload pseudocode in firmware %s\n",
vub300->vub_name);
strncpy(vub300->vub_name, "corrupt offload pseudocode",
sizeof(vub300->vub_name));
return;
}
interrupt_size += *data++;
size -= 1;
interrupt_size <<= 8;
interrupt_size += *data++;
size -= 1;
if (interrupt_size < size) {
u16 xfer_length = roundup_to_multiple_of_64(interrupt_size);
u8 *xfer_buffer = kmalloc(xfer_length, GFP_KERNEL);
if (xfer_buffer) {
int retval;
memcpy(xfer_buffer, data, interrupt_size);
memset(xfer_buffer + interrupt_size, 0,
xfer_length - interrupt_size);
size -= interrupt_size;
data += interrupt_size;
retval =
usb_control_msg(vub300->udev,
usb_sndctrlpipe(vub300->udev, 0),
SET_INTERRUPT_PSEUDOCODE,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_DEVICE, 0x0000, 0x0000,
xfer_buffer, xfer_length, HZ);
kfree(xfer_buffer);
if (retval < 0) {
strncpy(vub300->vub_name,
"SDIO pseudocode download failed",
sizeof(vub300->vub_name));
return;
}
} else {
dev_err(&vub300->udev->dev,
"not enough memory for xfer buffer to send"
" INTERRUPT_PSEUDOCODE for %s %s\n", fw->data,
vub300->vub_name);
strncpy(vub300->vub_name,
"SDIO interrupt pseudocode download failed",
sizeof(vub300->vub_name));
return;
}
} else {
dev_err(&vub300->udev->dev,
"corrupt interrupt pseudocode in firmware %s %s\n",
fw->data, vub300->vub_name);
strncpy(vub300->vub_name, "corrupt interrupt pseudocode",
sizeof(vub300->vub_name));
return;
}
ts += *data++;
size -= 1;
ts <<= 8;
ts += *data++;
size -= 1;
if (ts < size) {
u16 xfer_length = roundup_to_multiple_of_64(ts);
u8 *xfer_buffer = kmalloc(xfer_length, GFP_KERNEL);
if (xfer_buffer) {
int retval;
memcpy(xfer_buffer, data, ts);
memset(xfer_buffer + ts, 0,
xfer_length - ts);
size -= ts;
data += ts;
retval =
usb_control_msg(vub300->udev,
usb_sndctrlpipe(vub300->udev, 0),
SET_TRANSFER_PSEUDOCODE,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_DEVICE, 0x0000, 0x0000,
xfer_buffer, xfer_length, HZ);
kfree(xfer_buffer);
if (retval < 0) {
strncpy(vub300->vub_name,
"SDIO pseudocode download failed",
sizeof(vub300->vub_name));
return;
}
} else {
dev_err(&vub300->udev->dev,
"not enough memory for xfer buffer to send"
" TRANSFER_PSEUDOCODE for %s %s\n", fw->data,
vub300->vub_name);
strncpy(vub300->vub_name,
"SDIO transfer pseudocode download failed",
sizeof(vub300->vub_name));
return;
}
} else {
dev_err(&vub300->udev->dev,
"corrupt transfer pseudocode in firmware %s %s\n",
fw->data, vub300->vub_name);
strncpy(vub300->vub_name, "corrupt transfer pseudocode",
sizeof(vub300->vub_name));
return;
}
register_count += *data++;
size -= 1;
if (register_count * 4 == size) {
int I = vub300->dynamic_register_count = register_count;
int i = 0;
while (I--) {
unsigned int func_num = 0;
vub300->sdio_register[i].func_num = *data++;
size -= 1;
func_num += *data++;
size -= 1;
func_num <<= 8;
func_num += *data++;
size -= 1;
func_num <<= 8;
func_num += *data++;
size -= 1;
vub300->sdio_register[i].sdio_reg = func_num;
vub300->sdio_register[i].activate = 1;
vub300->sdio_register[i].prepared = 0;
i += 1;
}
dev_info(&vub300->udev->dev,
"initialized %d dynamic pseudocode registers\n",
vub300->dynamic_register_count);
return;
} else {
dev_err(&vub300->udev->dev,
"corrupt dynamic registers in firmware %s\n",
vub300->vub_name);
strncpy(vub300->vub_name, "corrupt dynamic registers",
sizeof(vub300->vub_name));
return;
}
}
/*
* if the binary containing the EMPTY PseudoCode can not be found
* vub300->vub_name is set anyway in order to prevent an automatic retry
*/
static void download_offload_pseudocode(struct vub300_mmc_host *vub300)
{
struct mmc_card *card = vub300->mmc->card;
int sdio_funcs = card->sdio_funcs;
const struct firmware *fw = NULL;
int l = snprintf(vub300->vub_name, sizeof(vub300->vub_name),
"vub_%04X%04X", card->cis.vendor, card->cis.device);
int n = 0;
int retval;
for (n = 0; n < sdio_funcs; n++) {
struct sdio_func *sf = card->sdio_func[n];
l += snprintf(vub300->vub_name + l,
sizeof(vub300->vub_name) - l, "_%04X%04X",
sf->vendor, sf->device);
};
snprintf(vub300->vub_name + l, sizeof(vub300->vub_name) - l, ".bin");
dev_info(&vub300->udev->dev, "requesting offload firmware %s\n",
vub300->vub_name);
retval = request_firmware(&fw, vub300->vub_name, &card->dev);
if (retval < 0) {
strncpy(vub300->vub_name, "vub_default.bin",
sizeof(vub300->vub_name));
retval = request_firmware(&fw, vub300->vub_name, &card->dev);
if (retval < 0) {
strncpy(vub300->vub_name,
"no SDIO offload firmware found",
sizeof(vub300->vub_name));
} else {
__download_offload_pseudocode(vub300, fw);
release_firmware(fw);
}
} else {
__download_offload_pseudocode(vub300, fw);
release_firmware(fw);
}
}
static void vub300_usb_bulk_msg_completion(struct urb *urb)
{ /* urb completion handler - hardirq */
complete((struct completion *)urb->context);
}
static int vub300_usb_bulk_msg(struct vub300_mmc_host *vub300,
unsigned int pipe, void *data, int len,
int *actual_length, int timeout_msecs)
{
/* cmd_mutex is held by vub300_cmndwork_thread */
struct usb_device *usb_dev = vub300->udev;
struct completion done;
int retval;
vub300->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!vub300->urb)
return -ENOMEM;
usb_fill_bulk_urb(vub300->urb, usb_dev, pipe, data, len,
vub300_usb_bulk_msg_completion, NULL);
init_completion(&done);
vub300->urb->context = &done;
vub300->urb->actual_length = 0;
retval = usb_submit_urb(vub300->urb, GFP_KERNEL);
if (unlikely(retval))
goto out;
if (!wait_for_completion_timeout
(&done, msecs_to_jiffies(timeout_msecs))) {
retval = -ETIMEDOUT;
usb_kill_urb(vub300->urb);
} else {
retval = vub300->urb->status;
}
out:
*actual_length = vub300->urb->actual_length;
usb_free_urb(vub300->urb);
vub300->urb = NULL;
return retval;
}
static int __command_read_data(struct vub300_mmc_host *vub300,
struct mmc_command *cmd, struct mmc_data *data)
{
/* cmd_mutex is held by vub300_cmndwork_thread */
int linear_length = vub300->datasize;
int padded_length = vub300->large_usb_packets ?
((511 + linear_length) >> 9) << 9 :
((63 + linear_length) >> 6) << 6;
if ((padded_length == linear_length) || !pad_input_to_usb_pkt) {
int result;
unsigned pipe;
pipe = usb_rcvbulkpipe(vub300->udev, vub300->data_inp_ep);
result = usb_sg_init(&vub300->sg_request, vub300->udev,
pipe, 0, data->sg,
data->sg_len, 0, GFP_KERNEL);
if (result < 0) {
usb_unlink_urb(vub300->command_out_urb);
usb_unlink_urb(vub300->command_res_urb);
cmd->error = result;
data->bytes_xfered = 0;
return 0;
} else {
vub300->sg_transfer_timer.expires =
jiffies + msecs_to_jiffies(2000 +
(linear_length / 16384));
add_timer(&vub300->sg_transfer_timer);
usb_sg_wait(&vub300->sg_request);
del_timer(&vub300->sg_transfer_timer);
if (vub300->sg_request.status < 0) {
cmd->error = vub300->sg_request.status;
data->bytes_xfered = 0;
return 0;
} else {
data->bytes_xfered = vub300->datasize;
return linear_length;
}
}
} else {
u8 *buf = kmalloc(padded_length, GFP_KERNEL);
if (buf) {
int result;
unsigned pipe = usb_rcvbulkpipe(vub300->udev,
vub300->data_inp_ep);
int actual_length = 0;
result = vub300_usb_bulk_msg(vub300, pipe, buf,
padded_length, &actual_length,
2000 + (padded_length / 16384));
if (result < 0) {
cmd->error = result;
data->bytes_xfered = 0;
kfree(buf);
return 0;
} else if (actual_length < linear_length) {
cmd->error = -EREMOTEIO;
data->bytes_xfered = 0;
kfree(buf);
return 0;
} else {
sg_copy_from_buffer(data->sg, data->sg_len, buf,
linear_length);
kfree(buf);
data->bytes_xfered = vub300->datasize;
return linear_length;
}
} else {
cmd->error = -ENOMEM;
data->bytes_xfered = 0;
return 0;
}
}
}
static int __command_write_data(struct vub300_mmc_host *vub300,
struct mmc_command *cmd, struct mmc_data *data)
{
/* cmd_mutex is held by vub300_cmndwork_thread */
unsigned pipe = usb_sndbulkpipe(vub300->udev, vub300->data_out_ep);
int linear_length = vub300->datasize;
int modulo_64_length = linear_length & 0x003F;
int modulo_512_length = linear_length & 0x01FF;
if (linear_length < 64) {
int result;
int actual_length;
sg_copy_to_buffer(data->sg, data->sg_len,
vub300->padded_buffer,
sizeof(vub300->padded_buffer));
memset(vub300->padded_buffer + linear_length, 0,
sizeof(vub300->padded_buffer) - linear_length);
result = vub300_usb_bulk_msg(vub300, pipe, vub300->padded_buffer,
sizeof(vub300->padded_buffer),
&actual_length, 2000 +
(sizeof(vub300->padded_buffer) /
16384));
if (result < 0) {
cmd->error = result;
data->bytes_xfered = 0;
} else {
data->bytes_xfered = vub300->datasize;
}
} else if ((!vub300->large_usb_packets && (0 < modulo_64_length)) ||
(vub300->large_usb_packets && (64 > modulo_512_length))
) { /* don't you just love these work-rounds */
int padded_length = ((63 + linear_length) >> 6) << 6;
u8 *buf = kmalloc(padded_length, GFP_KERNEL);
if (buf) {
int result;
int actual_length;
sg_copy_to_buffer(data->sg, data->sg_len, buf,
padded_length);
memset(buf + linear_length, 0,
padded_length - linear_length);
result =
vub300_usb_bulk_msg(vub300, pipe, buf,
padded_length, &actual_length,
2000 + padded_length / 16384);
kfree(buf);
if (result < 0) {
cmd->error = result;
data->bytes_xfered = 0;
} else {
data->bytes_xfered = vub300->datasize;
}
} else {
cmd->error = -ENOMEM;
data->bytes_xfered = 0;
}
} else { /* no data padding required */
int result;
unsigned char buf[64 * 4];
sg_copy_to_buffer(data->sg, data->sg_len, buf, sizeof(buf));
result = usb_sg_init(&vub300->sg_request, vub300->udev,
pipe, 0, data->sg,
data->sg_len, 0, GFP_KERNEL);
if (result < 0) {
usb_unlink_urb(vub300->command_out_urb);
usb_unlink_urb(vub300->command_res_urb);
cmd->error = result;
data->bytes_xfered = 0;
} else {
vub300->sg_transfer_timer.expires =
jiffies + msecs_to_jiffies(2000 +
linear_length / 16384);
add_timer(&vub300->sg_transfer_timer);
usb_sg_wait(&vub300->sg_request);
if (cmd->error) {
data->bytes_xfered = 0;
} else {
del_timer(&vub300->sg_transfer_timer);
if (vub300->sg_request.status < 0) {
cmd->error = vub300->sg_request.status;
data->bytes_xfered = 0;
} else {
data->bytes_xfered = vub300->datasize;
}
}
}
}
return linear_length;
}
static void __vub300_command_response(struct vub300_mmc_host *vub300,
struct mmc_command *cmd,
struct mmc_data *data, int data_length)
{
/* cmd_mutex is held by vub300_cmndwork_thread */
long respretval;
int msec_timeout = 1000 + data_length / 4;
respretval =
wait_for_completion_timeout(&vub300->command_complete,
msecs_to_jiffies(msec_timeout));
if (respretval == 0) { /* TIMED OUT */
/* we don't know which of "out" and "res" if any failed */
int result;
vub300->usb_timed_out = 1;
usb_kill_urb(vub300->command_out_urb);
usb_kill_urb(vub300->command_res_urb);
cmd->error = -ETIMEDOUT;
result = usb_lock_device_for_reset(vub300->udev,
vub300->interface);
if (result == 0) {
result = usb_reset_device(vub300->udev);
usb_unlock_device(vub300->udev);
}
} else if (respretval < 0) {
/* we don't know which of "out" and "res" if any failed */
usb_kill_urb(vub300->command_out_urb);
usb_kill_urb(vub300->command_res_urb);
cmd->error = respretval;
} else if (cmd->error) {
/*
* the error occured sending the command
* or recieving the response
*/
} else if (vub300->command_out_urb->status) {
vub300->usb_transport_fail = vub300->command_out_urb->status;
cmd->error = -EPROTO == vub300->command_out_urb->status ?
-ESHUTDOWN : vub300->command_out_urb->status;
} else if (vub300->command_res_urb->status) {
vub300->usb_transport_fail = vub300->command_res_urb->status;
cmd->error = -EPROTO == vub300->command_res_urb->status ?
-ESHUTDOWN : vub300->command_res_urb->status;
} else if (vub300->resp.common.header_type == 0x00) {
/*
* the command completed successfully
* and there was no piggybacked data
*/
} else if (vub300->resp.common.header_type == RESPONSE_ERROR) {
cmd->error =
vub300_response_error(vub300->resp.error.error_code);
if (vub300->data)
usb_sg_cancel(&vub300->sg_request);
} else if (vub300->resp.common.header_type == RESPONSE_PIGGYBACKED) {
int offloaded_data_length =
vub300->resp.common.header_size -
sizeof(struct sd_register_header);
int register_count = offloaded_data_length >> 3;
int ri = 0;
while (register_count--) {
add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]);
ri += 1;
}
vub300->resp.common.header_size =
sizeof(struct sd_register_header);
vub300->resp.common.header_type = 0x00;
cmd->error = 0;
} else if (vub300->resp.common.header_type == RESPONSE_PIG_DISABLED) {
int offloaded_data_length =
vub300->resp.common.header_size -
sizeof(struct sd_register_header);
int register_count = offloaded_data_length >> 3;
int ri = 0;
while (register_count--) {
add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]);
ri += 1;
}
mutex_lock(&vub300->irq_mutex);
if (vub300->irqs_queued) {
vub300->irqs_queued += 1;
} else if (vub300->irq_enabled) {
vub300->irqs_queued += 1;
vub300_queue_poll_work(vub300, 0);
} else {
vub300->irqs_queued += 1;
}
vub300->irq_disabled = 1;
mutex_unlock(&vub300->irq_mutex);
vub300->resp.common.header_size =
sizeof(struct sd_register_header);
vub300->resp.common.header_type = 0x00;
cmd->error = 0;
} else if (vub300->resp.common.header_type == RESPONSE_PIG_ENABLED) {
int offloaded_data_length =
vub300->resp.common.header_size -
sizeof(struct sd_register_header);
int register_count = offloaded_data_length >> 3;
int ri = 0;
while (register_count--) {
add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]);
ri += 1;
}
mutex_lock(&vub300->irq_mutex);
if (vub300->irqs_queued) {
vub300->irqs_queued += 1;
} else if (vub300->irq_enabled) {
vub300->irqs_queued += 1;
vub300_queue_poll_work(vub300, 0);
} else {
vub300->irqs_queued += 1;
}
vub300->irq_disabled = 0;
mutex_unlock(&vub300->irq_mutex);
vub300->resp.common.header_size =
sizeof(struct sd_register_header);
vub300->resp.common.header_type = 0x00;
cmd->error = 0;
} else {
cmd->error = -EINVAL;
}
}
static void construct_request_response(struct vub300_mmc_host *vub300,
struct mmc_command *cmd)
{
int resp_len = vub300->resp_len;
int less_cmd = (17 == resp_len) ? resp_len : resp_len - 1;
int bytes = 3 & less_cmd;
int words = less_cmd >> 2;
u8 *r = vub300->resp.response.command_response;
if (bytes == 3) {
cmd->resp[words] = (r[1 + (words << 2)] << 24)
| (r[2 + (words << 2)] << 16)
| (r[3 + (words << 2)] << 8);
} else if (bytes == 2) {
cmd->resp[words] = (r[1 + (words << 2)] << 24)
| (r[2 + (words << 2)] << 16);
} else if (bytes == 1) {
cmd->resp[words] = (r[1 + (words << 2)] << 24);
}
while (words-- > 0) {
cmd->resp[words] = (r[1 + (words << 2)] << 24)
| (r[2 + (words << 2)] << 16)
| (r[3 + (words << 2)] << 8)
| (r[4 + (words << 2)] << 0);
}
if ((cmd->opcode == 53) && (0x000000FF & cmd->resp[0]))
cmd->resp[0] &= 0xFFFFFF00;
}
/* this thread runs only when there is an upper level command req outstanding */
static void vub300_cmndwork_thread(struct work_struct *work)
{
struct vub300_mmc_host *vub300 =
container_of(work, struct vub300_mmc_host, cmndwork);
if (!vub300->interface) {
kref_put(&vub300->kref, vub300_delete);
return;
} else {
struct mmc_request *req = vub300->req;
struct mmc_command *cmd = vub300->cmd;
struct mmc_data *data = vub300->data;
int data_length;
mutex_lock(&vub300->cmd_mutex);
init_completion(&vub300->command_complete);
if (likely(vub300->vub_name[0]) || !vub300->mmc->card ||
!mmc_card_present(vub300->mmc->card)) {
/*
* the name of the EMPTY Pseudo firmware file
* is used as a flag to indicate that the file
* has been already downloaded to the VUB300 chip
*/
} else if (0 == vub300->mmc->card->sdio_funcs) {
strncpy(vub300->vub_name, "SD memory device",
sizeof(vub300->vub_name));
} else {
download_offload_pseudocode(vub300);
}
send_command(vub300);
if (!data)
data_length = 0;
else if (MMC_DATA_READ & data->flags)
data_length = __command_read_data(vub300, cmd, data);
else
data_length = __command_write_data(vub300, cmd, data);
__vub300_command_response(vub300, cmd, data, data_length);
vub300->req = NULL;
vub300->cmd = NULL;
vub300->data = NULL;
if (cmd->error) {
if (cmd->error == -ENOMEDIUM)
check_vub300_port_status(vub300);
mutex_unlock(&vub300->cmd_mutex);
mmc_request_done(vub300->mmc, req);
kref_put(&vub300->kref, vub300_delete);
return;
} else {
construct_request_response(vub300, cmd);
vub300->resp_len = 0;
mutex_unlock(&vub300->cmd_mutex);
kref_put(&vub300->kref, vub300_delete);
mmc_request_done(vub300->mmc, req);
return;
}
}
}
static int examine_cyclic_buffer(struct vub300_mmc_host *vub300,
struct mmc_command *cmd, u8 Function)
{
/* cmd_mutex is held by vub300_mmc_request */
u8 cmd0 = 0xFF & (cmd->arg >> 24);
u8 cmd1 = 0xFF & (cmd->arg >> 16);
u8 cmd2 = 0xFF & (cmd->arg >> 8);
u8 cmd3 = 0xFF & (cmd->arg >> 0);
int first = MAXREGMASK & vub300->fn[Function].offload_point;
struct offload_registers_access *rf = &vub300->fn[Function].reg[first];
if (cmd0 == rf->command_byte[0] &&
cmd1 == rf->command_byte[1] &&
cmd2 == rf->command_byte[2] &&
cmd3 == rf->command_byte[3]) {
u8 checksum = 0x00;
cmd->resp[1] = checksum << 24;
cmd->resp[0] = (rf->Respond_Byte[0] << 24)
| (rf->Respond_Byte[1] << 16)
| (rf->Respond_Byte[2] << 8)
| (rf->Respond_Byte[3] << 0);
vub300->fn[Function].offload_point += 1;
vub300->fn[Function].offload_count -= 1;
vub300->total_offload_count -= 1;
return 1;
} else {
int delta = 1; /* because it does not match the first one */
u8 register_count = vub300->fn[Function].offload_count - 1;
u32 register_point = vub300->fn[Function].offload_point + 1;
while (0 < register_count) {
int point = MAXREGMASK & register_point;
struct offload_registers_access *r =
&vub300->fn[Function].reg[point];
if (cmd0 == r->command_byte[0] &&
cmd1 == r->command_byte[1] &&
cmd2 == r->command_byte[2] &&
cmd3 == r->command_byte[3]) {
u8 checksum = 0x00;
cmd->resp[1] = checksum << 24;
cmd->resp[0] = (r->Respond_Byte[0] << 24)
| (r->Respond_Byte[1] << 16)
| (r->Respond_Byte[2] << 8)
| (r->Respond_Byte[3] << 0);
vub300->fn[Function].offload_point += delta;
vub300->fn[Function].offload_count -= delta;
vub300->total_offload_count -= delta;
return 1;
} else {
register_point += 1;
register_count -= 1;
delta += 1;
continue;
}
}
return 0;
}
}
static int satisfy_request_from_offloaded_data(struct vub300_mmc_host *vub300,
struct mmc_command *cmd)
{
/* cmd_mutex is held by vub300_mmc_request */
u8 regs = vub300->dynamic_register_count;
u8 i = 0;
u8 func = FUN(cmd);
u32 reg = REG(cmd);
while (0 < regs--) {
if ((vub300->sdio_register[i].func_num == func) &&
(vub300->sdio_register[i].sdio_reg == reg)) {
if (!vub300->sdio_register[i].prepared) {
return 0;
} else if ((0x80000000 & cmd->arg) == 0x80000000) {
/*
* a write to a dynamic register
* nullifies our offloaded value
*/
vub300->sdio_register[i].prepared = 0;
return 0;
} else {
u8 checksum = 0x00;
u8 rsp0 = 0x00;
u8 rsp1 = 0x00;
u8 rsp2 = vub300->sdio_register[i].response;
u8 rsp3 = vub300->sdio_register[i].regvalue;
vub300->sdio_register[i].prepared = 0;
cmd->resp[1] = checksum << 24;
cmd->resp[0] = (rsp0 << 24)
| (rsp1 << 16)
| (rsp2 << 8)
| (rsp3 << 0);
return 1;
}
} else {
i += 1;
continue;
}
};
if (vub300->total_offload_count == 0)
return 0;
else if (vub300->fn[func].offload_count == 0)
return 0;
else
return examine_cyclic_buffer(vub300, cmd, func);
}
static void vub300_mmc_request(struct mmc_host *mmc, struct mmc_request *req)
{ /* NOT irq */
struct mmc_command *cmd = req->cmd;
struct vub300_mmc_host *vub300 = mmc_priv(mmc);
if (!vub300->interface) {
cmd->error = -ESHUTDOWN;
mmc_request_done(mmc, req);
return;
} else {
struct mmc_data *data = req->data;
if (!vub300->card_powered) {
cmd->error = -ENOMEDIUM;
mmc_request_done(mmc, req);
return;
}
if (!vub300->card_present) {
cmd->error = -ENOMEDIUM;
mmc_request_done(mmc, req);
return;
}
if (vub300->usb_transport_fail) {
cmd->error = vub300->usb_transport_fail;
mmc_request_done(mmc, req);
return;
}
if (!vub300->interface) {
cmd->error = -ENODEV;
mmc_request_done(mmc, req);
return;
}
kref_get(&vub300->kref);
mutex_lock(&vub300->cmd_mutex);
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
/*
* for performance we have to return immediately
* if the requested data has been offloaded
*/
if (cmd->opcode == 52 &&
satisfy_request_from_offloaded_data(vub300, cmd)) {
cmd->error = 0;
mutex_unlock(&vub300->cmd_mutex);
kref_put(&vub300->kref, vub300_delete);
mmc_request_done(mmc, req);
return;
} else {
vub300->cmd = cmd;
vub300->req = req;
vub300->data = data;
if (data)
vub300->datasize = data->blksz * data->blocks;
else
vub300->datasize = 0;
vub300_queue_cmnd_work(vub300);
mutex_unlock(&vub300->cmd_mutex);
kref_put(&vub300->kref, vub300_delete);
/*
* the kernel lock diagnostics complain
* if the cmd_mutex * is "passed on"
* to the cmndwork thread,
* so we must release it now
* and re-acquire it in the cmndwork thread
*/
}
}
}
static void __set_clock_speed(struct vub300_mmc_host *vub300, u8 buf[8],
struct mmc_ios *ios)
{
int buf_array_size = 8; /* ARRAY_SIZE(buf) does not work !!! */
int retval;
u32 kHzClock;
if (ios->clock >= 48000000)
kHzClock = 48000;
else if (ios->clock >= 24000000)
kHzClock = 24000;
else if (ios->clock >= 20000000)
kHzClock = 20000;
else if (ios->clock >= 15000000)
kHzClock = 15000;
else if (ios->clock >= 200000)
kHzClock = 200;
else
kHzClock = 0;
{
int i;
u64 c = kHzClock;
for (i = 0; i < buf_array_size; i++) {
buf[i] = c;
c >>= 8;
}
}
retval =
usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0),
SET_CLOCK_SPEED,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x00, 0x00, buf, buf_array_size, HZ);
if (retval != 8) {
dev_err(&vub300->udev->dev, "SET_CLOCK_SPEED"
" %dkHz failed with retval=%d\n", kHzClock, retval);
} else {
dev_dbg(&vub300->udev->dev, "SET_CLOCK_SPEED"
" %dkHz\n", kHzClock);
}
}
static void vub300_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{ /* NOT irq */
struct vub300_mmc_host *vub300 = mmc_priv(mmc);
if (!vub300->interface)
return;
kref_get(&vub300->kref);
mutex_lock(&vub300->cmd_mutex);
if ((ios->power_mode == MMC_POWER_OFF) && vub300->card_powered) {
vub300->card_powered = 0;
usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0),
SET_SD_POWER,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x0000, 0x0000, NULL, 0, HZ);
/* must wait for the VUB300 u-proc to boot up */
msleep(600);
} else if ((ios->power_mode == MMC_POWER_UP) && !vub300->card_powered) {
usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0),
SET_SD_POWER,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x0001, 0x0000, NULL, 0, HZ);
msleep(600);
vub300->card_powered = 1;
} else if (ios->power_mode == MMC_POWER_ON) {
u8 *buf = kmalloc(8, GFP_KERNEL);
if (buf) {
__set_clock_speed(vub300, buf, ios);
kfree(buf);
}
} else {
/* this should mean no change of state */
}
mutex_unlock(&vub300->cmd_mutex);
kref_put(&vub300->kref, vub300_delete);
}
static int vub300_mmc_get_ro(struct mmc_host *mmc)
{
struct vub300_mmc_host *vub300 = mmc_priv(mmc);
return vub300->read_only;
}
static void vub300_enable_sdio_irq(struct mmc_host *mmc, int enable)
{ /* NOT irq */
struct vub300_mmc_host *vub300 = mmc_priv(mmc);
if (!vub300->interface)
return;
kref_get(&vub300->kref);
if (enable) {
mutex_lock(&vub300->irq_mutex);
if (vub300->irqs_queued) {
vub300->irqs_queued -= 1;
mmc_signal_sdio_irq(vub300->mmc);
} else if (vub300->irq_disabled) {
vub300->irq_disabled = 0;
vub300->irq_enabled = 1;
vub300_queue_poll_work(vub300, 0);
} else if (vub300->irq_enabled) {
/* this should not happen, so we will just ignore it */
} else {
vub300->irq_enabled = 1;
vub300_queue_poll_work(vub300, 0);
}
mutex_unlock(&vub300->irq_mutex);
} else {
vub300->irq_enabled = 0;
}
kref_put(&vub300->kref, vub300_delete);
}
void vub300_init_card(struct mmc_host *mmc, struct mmc_card *card)
{ /* NOT irq */
struct vub300_mmc_host *vub300 = mmc_priv(mmc);
dev_info(&vub300->udev->dev, "NO host QUIRKS for this card\n");
}
static struct mmc_host_ops vub300_mmc_ops = {
.request = vub300_mmc_request,
.set_ios = vub300_mmc_set_ios,
.get_ro = vub300_mmc_get_ro,
.enable_sdio_irq = vub300_enable_sdio_irq,
.init_card = vub300_init_card,
};
static int vub300_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{ /* NOT irq */
struct vub300_mmc_host *vub300 = NULL;
struct usb_host_interface *iface_desc;
struct usb_device *udev = usb_get_dev(interface_to_usbdev(interface));
int i;
int retval = -ENOMEM;
struct urb *command_out_urb;
struct urb *command_res_urb;
struct mmc_host *mmc;
char manufacturer[48];
char product[32];
char serial_number[32];
usb_string(udev, udev->descriptor.iManufacturer, manufacturer,
sizeof(manufacturer));
usb_string(udev, udev->descriptor.iProduct, product, sizeof(product));
usb_string(udev, udev->descriptor.iSerialNumber, serial_number,
sizeof(serial_number));
dev_info(&udev->dev, "probing VID:PID(%04X:%04X) %s %s %s\n",
udev->descriptor.idVendor, udev->descriptor.idProduct,
manufacturer, product, serial_number);
command_out_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!command_out_urb) {
retval = -ENOMEM;
dev_err(&vub300->udev->dev,
"not enough memory for the command_out_urb\n");
goto error0;
}
command_res_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!command_res_urb) {
retval = -ENOMEM;
dev_err(&vub300->udev->dev,
"not enough memory for the command_res_urb\n");
goto error1;
}
/* this also allocates memory for our VUB300 mmc host device */
mmc = mmc_alloc_host(sizeof(struct vub300_mmc_host), &udev->dev);
if (!mmc) {
retval = -ENOMEM;
dev_err(&vub300->udev->dev,
"not enough memory for the mmc_host\n");
goto error4;
}
/* MMC core transfer sizes tunable parameters */
mmc->caps = 0;
if (!force_1_bit_data_xfers)
mmc->caps |= MMC_CAP_4_BIT_DATA;
if (!force_polling_for_irqs)
mmc->caps |= MMC_CAP_SDIO_IRQ;
mmc->caps &= ~MMC_CAP_NEEDS_POLL;
/*
* MMC_CAP_NEEDS_POLL causes core.c:mmc_rescan() to poll
* for devices which results in spurious CMD7's being
* issued which stops some SDIO cards from working
*/
if (limit_speed_to_24_MHz) {
mmc->caps |= MMC_CAP_MMC_HIGHSPEED;
mmc->caps |= MMC_CAP_SD_HIGHSPEED;
mmc->f_max = 24000000;
dev_info(&udev->dev, "limiting SDIO speed to 24_MHz\n");
} else {
mmc->caps |= MMC_CAP_MMC_HIGHSPEED;
mmc->caps |= MMC_CAP_SD_HIGHSPEED;
mmc->f_max = 48000000;
}
mmc->f_min = 200000;
mmc->max_blk_count = 511;
mmc->max_blk_size = 512;
mmc->max_segs = 128;
if (force_max_req_size)
mmc->max_req_size = force_max_req_size * 1024;
else
mmc->max_req_size = 64 * 1024;
mmc->max_seg_size = mmc->max_req_size;
mmc->ocr_avail = 0;
mmc->ocr_avail |= MMC_VDD_165_195;
mmc->ocr_avail |= MMC_VDD_20_21;
mmc->ocr_avail |= MMC_VDD_21_22;
mmc->ocr_avail |= MMC_VDD_22_23;
mmc->ocr_avail |= MMC_VDD_23_24;
mmc->ocr_avail |= MMC_VDD_24_25;
mmc->ocr_avail |= MMC_VDD_25_26;
mmc->ocr_avail |= MMC_VDD_26_27;
mmc->ocr_avail |= MMC_VDD_27_28;
mmc->ocr_avail |= MMC_VDD_28_29;
mmc->ocr_avail |= MMC_VDD_29_30;
mmc->ocr_avail |= MMC_VDD_30_31;
mmc->ocr_avail |= MMC_VDD_31_32;
mmc->ocr_avail |= MMC_VDD_32_33;
mmc->ocr_avail |= MMC_VDD_33_34;
mmc->ocr_avail |= MMC_VDD_34_35;
mmc->ocr_avail |= MMC_VDD_35_36;
mmc->ops = &vub300_mmc_ops;
vub300 = mmc_priv(mmc);
vub300->mmc = mmc;
vub300->card_powered = 0;
vub300->bus_width = 0;
vub300->cmnd.head.block_size[0] = 0x00;
vub300->cmnd.head.block_size[1] = 0x00;
vub300->app_spec = 0;
mutex_init(&vub300->cmd_mutex);
mutex_init(&vub300->irq_mutex);
vub300->command_out_urb = command_out_urb;
vub300->command_res_urb = command_res_urb;
vub300->usb_timed_out = 0;
vub300->dynamic_register_count = 0;
for (i = 0; i < ARRAY_SIZE(vub300->fn); i++) {
vub300->fn[i].offload_point = 0;
vub300->fn[i].offload_count = 0;
}
vub300->total_offload_count = 0;
vub300->irq_enabled = 0;
vub300->irq_disabled = 0;
vub300->irqs_queued = 0;
for (i = 0; i < ARRAY_SIZE(vub300->sdio_register); i++)
vub300->sdio_register[i++].activate = 0;
vub300->udev = udev;
vub300->interface = interface;
vub300->cmnd_res_ep = 0;
vub300->cmnd_out_ep = 0;
vub300->data_inp_ep = 0;
vub300->data_out_ep = 0;
for (i = 0; i < ARRAY_SIZE(vub300->fbs); i++)
vub300->fbs[i] = 512;
/*
* set up the endpoint information
*
* use the first pair of bulk-in and bulk-out
* endpoints for Command/Response+Interrupt
*
* use the second pair of bulk-in and bulk-out
* endpoints for Data In/Out
*/
vub300->large_usb_packets = 0;
iface_desc = interface->cur_altsetting;
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
struct usb_endpoint_descriptor *endpoint =
&iface_desc->endpoint[i].desc;
dev_info(&vub300->udev->dev,
"vub300 testing %s EndPoint(%d) %02X\n",
usb_endpoint_is_bulk_in(endpoint) ? "BULK IN" :
usb_endpoint_is_bulk_out(endpoint) ? "BULK OUT" :
"UNKNOWN", i, endpoint->bEndpointAddress);
if (endpoint->wMaxPacketSize > 64)
vub300->large_usb_packets = 1;
if (usb_endpoint_is_bulk_in(endpoint)) {
if (!vub300->cmnd_res_ep) {
vub300->cmnd_res_ep =
endpoint->bEndpointAddress;
} else if (!vub300->data_inp_ep) {
vub300->data_inp_ep =
endpoint->bEndpointAddress;
} else {
dev_warn(&vub300->udev->dev,
"ignoring"
" unexpected bulk_in endpoint");
}
} else if (usb_endpoint_is_bulk_out(endpoint)) {
if (!vub300->cmnd_out_ep) {
vub300->cmnd_out_ep =
endpoint->bEndpointAddress;
} else if (!vub300->data_out_ep) {
vub300->data_out_ep =
endpoint->bEndpointAddress;
} else {
dev_warn(&vub300->udev->dev,
"ignoring"
" unexpected bulk_out endpoint");
}
} else {
dev_warn(&vub300->udev->dev,
"vub300 ignoring EndPoint(%d) %02X", i,
endpoint->bEndpointAddress);
}
}
if (vub300->cmnd_res_ep && vub300->cmnd_out_ep &&
vub300->data_inp_ep && vub300->data_out_ep) {
dev_info(&vub300->udev->dev,
"vub300 %s packets"
" using EndPoints %02X %02X %02X %02X\n",
vub300->large_usb_packets ? "LARGE" : "SMALL",
vub300->cmnd_out_ep, vub300->cmnd_res_ep,
vub300->data_out_ep, vub300->data_inp_ep);
/* we have the expected EndPoints */
} else {
dev_err(&vub300->udev->dev,
"Could not find two sets of bulk-in/out endpoint pairs\n");
retval = -EINVAL;
goto error5;
}
retval =
usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0),
GET_HC_INF0,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x0000, 0x0000, &vub300->hc_info,
sizeof(vub300->hc_info), HZ);
if (retval < 0)
goto error5;
retval =
usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0),
SET_ROM_WAIT_STATES,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
firmware_rom_wait_states, 0x0000, NULL, 0, HZ);
if (retval < 0)
goto error5;
dev_info(&vub300->udev->dev,
"operating_mode = %s %s %d MHz %s %d byte USB packets\n",
(mmc->caps & MMC_CAP_SDIO_IRQ) ? "IRQs" : "POLL",
(mmc->caps & MMC_CAP_4_BIT_DATA) ? "4-bit" : "1-bit",
mmc->f_max / 1000000,
pad_input_to_usb_pkt ? "padding input data to" : "with",
vub300->large_usb_packets ? 512 : 64);
retval =
usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0),
GET_SYSTEM_PORT_STATUS,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x0000, 0x0000, &vub300->system_port_status,
sizeof(vub300->system_port_status), HZ);
if (retval < 0) {
goto error4;
} else if (sizeof(vub300->system_port_status) == retval) {
vub300->card_present =
(0x0001 & vub300->system_port_status.port_flags) ? 1 : 0;
vub300->read_only =
(0x0010 & vub300->system_port_status.port_flags) ? 1 : 0;
} else {
goto error4;
}
usb_set_intfdata(interface, vub300);
INIT_DELAYED_WORK(&vub300->pollwork, vub300_pollwork_thread);
INIT_WORK(&vub300->cmndwork, vub300_cmndwork_thread);
INIT_WORK(&vub300->deadwork, vub300_deadwork_thread);
kref_init(&vub300->kref);
init_timer(&vub300->sg_transfer_timer);
vub300->sg_transfer_timer.data = (unsigned long)vub300;
vub300->sg_transfer_timer.function = vub300_sg_timed_out;
kref_get(&vub300->kref);
init_timer(&vub300->inactivity_timer);
vub300->inactivity_timer.data = (unsigned long)vub300;
vub300->inactivity_timer.function = vub300_inactivity_timer_expired;
vub300->inactivity_timer.expires = jiffies + HZ;
add_timer(&vub300->inactivity_timer);
if (vub300->card_present)
dev_info(&vub300->udev->dev,
"USB vub300 remote SDIO host controller[%d]"
"connected with SD/SDIO card inserted\n",
interface_to_InterfaceNumber(interface));
else
dev_info(&vub300->udev->dev,
"USB vub300 remote SDIO host controller[%d]"
"connected with no SD/SDIO card inserted\n",
interface_to_InterfaceNumber(interface));
mmc_add_host(mmc);
return 0;
error5:
mmc_free_host(mmc);
/*
* and hence also frees vub300
* which is contained at the end of struct mmc
*/
error4:
usb_free_urb(command_out_urb);
error1:
usb_free_urb(command_res_urb);
error0:
return retval;
}
static void vub300_disconnect(struct usb_interface *interface)
{ /* NOT irq */
struct vub300_mmc_host *vub300 = usb_get_intfdata(interface);
if (!vub300 || !vub300->mmc) {
return;
} else {
struct mmc_host *mmc = vub300->mmc;
if (!vub300->mmc) {
return;
} else {
int ifnum = interface_to_InterfaceNumber(interface);
usb_set_intfdata(interface, NULL);
/* prevent more I/O from starting */
vub300->interface = NULL;
kref_put(&vub300->kref, vub300_delete);
mmc_remove_host(mmc);
pr_info("USB vub300 remote SDIO host controller[%d]"
" now disconnected", ifnum);
return;
}
}
}
#ifdef CONFIG_PM
static int vub300_suspend(struct usb_interface *intf, pm_message_t message)
{
struct vub300_mmc_host *vub300 = usb_get_intfdata(intf);
if (!vub300 || !vub300->mmc) {
return 0;
} else {
struct mmc_host *mmc = vub300->mmc;
mmc_suspend_host(mmc);
return 0;
}
}
static int vub300_resume(struct usb_interface *intf)
{
struct vub300_mmc_host *vub300 = usb_get_intfdata(intf);
if (!vub300 || !vub300->mmc) {
return 0;
} else {
struct mmc_host *mmc = vub300->mmc;
mmc_resume_host(mmc);
return 0;
}
}
#else
#define vub300_suspend NULL
#define vub300_resume NULL
#endif
static int vub300_pre_reset(struct usb_interface *intf)
{ /* NOT irq */
struct vub300_mmc_host *vub300 = usb_get_intfdata(intf);
mutex_lock(&vub300->cmd_mutex);
return 0;
}
static int vub300_post_reset(struct usb_interface *intf)
{ /* NOT irq */
struct vub300_mmc_host *vub300 = usb_get_intfdata(intf);
/* we are sure no URBs are active - no locking needed */
vub300->errors = -EPIPE;
mutex_unlock(&vub300->cmd_mutex);
return 0;
}
static struct usb_driver vub300_driver = {
.name = "vub300",
.probe = vub300_probe,
.disconnect = vub300_disconnect,
.suspend = vub300_suspend,
.resume = vub300_resume,
.pre_reset = vub300_pre_reset,
.post_reset = vub300_post_reset,
.id_table = vub300_table,
.supports_autosuspend = 1,
};
static int __init vub300_init(void)
{ /* NOT irq */
int result;
pr_info("VUB300 Driver rom wait states = %02X irqpoll timeout = %04X",
firmware_rom_wait_states, 0x0FFFF & firmware_irqpoll_timeout);
cmndworkqueue = create_singlethread_workqueue("kvub300c");
if (!cmndworkqueue) {
pr_err("not enough memory for the REQUEST workqueue");
result = -ENOMEM;
goto out1;
}
pollworkqueue = create_singlethread_workqueue("kvub300p");
if (!pollworkqueue) {
pr_err("not enough memory for the IRQPOLL workqueue");
result = -ENOMEM;
goto out2;
}
deadworkqueue = create_singlethread_workqueue("kvub300d");
if (!deadworkqueue) {
pr_err("not enough memory for the EXPIRED workqueue");
result = -ENOMEM;
goto out3;
}
result = usb_register(&vub300_driver);
if (result) {
pr_err("usb_register failed. Error number %d", result);
goto out4;
}
return 0;
out4:
destroy_workqueue(deadworkqueue);
out3:
destroy_workqueue(pollworkqueue);
out2:
destroy_workqueue(cmndworkqueue);
out1:
return result;
}
static void __exit vub300_exit(void)
{
usb_deregister(&vub300_driver);
flush_workqueue(cmndworkqueue);
flush_workqueue(pollworkqueue);
flush_workqueue(deadworkqueue);
destroy_workqueue(cmndworkqueue);
destroy_workqueue(pollworkqueue);
destroy_workqueue(deadworkqueue);
}
module_init(vub300_init);
module_exit(vub300_exit);
MODULE_AUTHOR("Tony Olech <tony.olech@elandigitalsystems.com>");
MODULE_DESCRIPTION("VUB300 USB to SD/MMC/SDIO adapter driver");
MODULE_LICENSE("GPL");
include/linux/Kbuild
View file @ 8c1c77ff
......@@ -4,6 +4,7 @@ header-y += caif/
header-y += dvb/
header-y += hdlc/
header-y += isdn/
header-y += mmc/
header-y += nfsd/
header-y += raid/
header-y += spi/
......
include/linux/mfd/tmio.h
View file @ 8c1c77ff
......@@ -4,6 +4,7 @@
#include <linux/fb.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#define tmio_ioread8(addr) readb(addr)
#define tmio_ioread16(addr) readw(addr)
......@@ -61,6 +62,12 @@
* Some controllers can support SDIO IRQ signalling.
*/
#define TMIO_MMC_SDIO_IRQ (1 << 2)
/*
* Some platforms can detect card insertion events with controller powered
* down, in which case they have to call tmio_mmc_cd_wakeup() to power up the
* controller and report the event to the driver.
*/
#define TMIO_MMC_HAS_COLD_CD (1 << 3)
int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base);
int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base);
......@@ -82,11 +89,21 @@ struct tmio_mmc_data {
unsigned long flags;
u32 ocr_mask; /* available voltages */
struct tmio_mmc_dma *dma;
struct device *dev;
bool power;
void (*set_pwr)(struct platform_device *host, int state);
void (*set_clk_div)(struct platform_device *host, int state);
int (*get_cd)(struct platform_device *host);
};
static inline void tmio_mmc_cd_wakeup(struct tmio_mmc_data *pdata)
{
if (pdata && !pdata->power) {
pdata->power = true;
pm_runtime_get(pdata->dev);
}
}
/*
* data for the NAND controller
*/
......
include/linux/mmc/Kbuild 0 → 100644
View file @ 8c1c77ff
header-y += ioctl.h
include/linux/mmc/card.h
View file @ 8c1c77ff
......@@ -11,6 +11,7 @@
#define LINUX_MMC_CARD_H
#include <linux/mmc/core.h>
#include <linux/mod_devicetable.h>
struct mmc_cid {
unsigned int manfid;
......@@ -29,6 +30,7 @@ struct mmc_csd {
unsigned short cmdclass;
unsigned short tacc_clks;
unsigned int tacc_ns;
unsigned int c_size;
unsigned int r2w_factor;
unsigned int max_dtr;
unsigned int erase_size; /* In sectors */
......@@ -45,6 +47,10 @@ struct mmc_ext_csd {
u8 rev;
u8 erase_group_def;
u8 sec_feature_support;
u8 rel_sectors;
u8 rel_param;
u8 part_config;
unsigned int part_time; /* Units: ms */
unsigned int sa_timeout; /* Units: 100ns */
unsigned int hs_max_dtr;
unsigned int sectors;
......@@ -57,13 +63,18 @@ struct mmc_ext_csd {
bool enhanced_area_en; /* enable bit */
unsigned long long enhanced_area_offset; /* Units: Byte */
unsigned int enhanced_area_size; /* Units: KB */
unsigned int boot_size; /* in bytes */
};
struct sd_scr {
unsigned char sda_vsn;
unsigned char sda_spec3;
unsigned char bus_widths;
#define SD_SCR_BUS_WIDTH_1 (1<<0)
#define SD_SCR_BUS_WIDTH_4 (1<<2)
unsigned char cmds;
#define SD_SCR_CMD20_SUPPORT (1<<0)
#define SD_SCR_CMD23_SUPPORT (1<<1)
};
struct sd_ssr {
......@@ -74,6 +85,39 @@ struct sd_ssr {
struct sd_switch_caps {
unsigned int hs_max_dtr;
unsigned int uhs_max_dtr;
#define UHS_SDR104_MAX_DTR 208000000
#define UHS_SDR50_MAX_DTR 100000000
#define UHS_DDR50_MAX_DTR 50000000
#define UHS_SDR25_MAX_DTR UHS_DDR50_MAX_DTR
#define UHS_SDR12_MAX_DTR 25000000
unsigned int sd3_bus_mode;
#define UHS_SDR12_BUS_SPEED 0
#define UHS_SDR25_BUS_SPEED 1
#define UHS_SDR50_BUS_SPEED 2
#define UHS_SDR104_BUS_SPEED 3
#define UHS_DDR50_BUS_SPEED 4
#define SD_MODE_UHS_SDR12 (1 << UHS_SDR12_BUS_SPEED)
#define SD_MODE_UHS_SDR25 (1 << UHS_SDR25_BUS_SPEED)
#define SD_MODE_UHS_SDR50 (1 << UHS_SDR50_BUS_SPEED)
#define SD_MODE_UHS_SDR104 (1 << UHS_SDR104_BUS_SPEED)
#define SD_MODE_UHS_DDR50 (1 << UHS_DDR50_BUS_SPEED)
unsigned int sd3_drv_type;
#define SD_DRIVER_TYPE_B 0x01
#define SD_DRIVER_TYPE_A 0x02
#define SD_DRIVER_TYPE_C 0x04
#define SD_DRIVER_TYPE_D 0x08
unsigned int sd3_curr_limit;
#define SD_SET_CURRENT_LIMIT_200 0
#define SD_SET_CURRENT_LIMIT_400 1
#define SD_SET_CURRENT_LIMIT_600 2
#define SD_SET_CURRENT_LIMIT_800 3
#define SD_MAX_CURRENT_200 (1 << SD_SET_CURRENT_LIMIT_200)
#define SD_MAX_CURRENT_400 (1 << SD_SET_CURRENT_LIMIT_400)
#define SD_MAX_CURRENT_600 (1 << SD_SET_CURRENT_LIMIT_600)
#define SD_MAX_CURRENT_800 (1 << SD_SET_CURRENT_LIMIT_800)
};
struct sdio_cccr {
......@@ -118,6 +162,8 @@ struct mmc_card {
#define MMC_STATE_HIGHSPEED (1<<2) /* card is in high speed mode */
#define MMC_STATE_BLOCKADDR (1<<3) /* card uses block-addressing */
#define MMC_STATE_HIGHSPEED_DDR (1<<4) /* card is in high speed mode */
#define MMC_STATE_ULTRAHIGHSPEED (1<<5) /* card is in ultra high speed mode */
#define MMC_CARD_SDXC (1<<6) /* card is SDXC */
unsigned int quirks; /* card quirks */
#define MMC_QUIRK_LENIENT_FN0 (1<<0) /* allow SDIO FN0 writes outside of the VS CCCR range */
#define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1) /* use func->cur_blksize */
......@@ -125,6 +171,10 @@ struct mmc_card {
#define MMC_QUIRK_NONSTD_SDIO (1<<2) /* non-standard SDIO card attached */
/* (missing CIA registers) */
#define MMC_QUIRK_BROKEN_CLK_GATING (1<<3) /* clock gating the sdio bus will make card fail */
#define MMC_QUIRK_NONSTD_FUNC_IF (1<<4) /* SDIO card has nonstd function interfaces */
#define MMC_QUIRK_DISABLE_CD (1<<5) /* disconnect CD/DAT[3] resistor */
#define MMC_QUIRK_INAND_CMD38 (1<<6) /* iNAND devices have broken CMD38 */
#define MMC_QUIRK_BLK_NO_CMD23 (1<<7) /* Avoid CMD23 for regular multiblock */
unsigned int erase_size; /* erase size in sectors */
unsigned int erase_shift; /* if erase unit is power 2 */
......@@ -145,14 +195,100 @@ struct mmc_card {
struct sdio_cccr cccr; /* common card info */
struct sdio_cis cis; /* common tuple info */
struct sdio_func *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
struct sdio_func *sdio_single_irq; /* SDIO function when only one IRQ active */
unsigned num_info; /* number of info strings */
const char **info; /* info strings */
struct sdio_func_tuple *tuples; /* unknown common tuples */
unsigned int sd_bus_speed; /* Bus Speed Mode set for the card */
struct dentry *debugfs_root;
};
void mmc_fixup_device(struct mmc_card *dev);
/*
* The world is not perfect and supplies us with broken mmc/sdio devices.
* For at least some of these bugs we need a work-around.
*/
struct mmc_fixup {
/* CID-specific fields. */
const char *name;
/* Valid revision range */
u64 rev_start, rev_end;
unsigned int manfid;
unsigned short oemid;
/* SDIO-specfic fields. You can use SDIO_ANY_ID here of course */
u16 cis_vendor, cis_device;
void (*vendor_fixup)(struct mmc_card *card, int data);
int data;
};
#define CID_MANFID_ANY (-1u)
#define CID_OEMID_ANY ((unsigned short) -1)
#define CID_NAME_ANY (NULL)
#define END_FIXUP { 0 }
#define _FIXUP_EXT(_name, _manfid, _oemid, _rev_start, _rev_end, \
_cis_vendor, _cis_device, \
_fixup, _data) \
{ \
.name = (_name), \
.manfid = (_manfid), \
.oemid = (_oemid), \
.rev_start = (_rev_start), \
.rev_end = (_rev_end), \
.cis_vendor = (_cis_vendor), \
.cis_device = (_cis_device), \
.vendor_fixup = (_fixup), \
.data = (_data), \
}
#define MMC_FIXUP_REV(_name, _manfid, _oemid, _rev_start, _rev_end, \
_fixup, _data) \
_FIXUP_EXT(_name, _manfid, \
_oemid, _rev_start, _rev_end, \
SDIO_ANY_ID, SDIO_ANY_ID, \
_fixup, _data) \
#define MMC_FIXUP(_name, _manfid, _oemid, _fixup, _data) \
MMC_FIXUP_REV(_name, _manfid, _oemid, 0, -1ull, _fixup, _data)
#define SDIO_FIXUP(_vendor, _device, _fixup, _data) \
_FIXUP_EXT(CID_NAME_ANY, CID_MANFID_ANY, \
CID_OEMID_ANY, 0, -1ull, \
_vendor, _device, \
_fixup, _data) \
#define cid_rev(hwrev, fwrev, year, month) \
(((u64) hwrev) << 40 | \
((u64) fwrev) << 32 | \
((u64) year) << 16 | \
((u64) month))
#define cid_rev_card(card) \
cid_rev(card->cid.hwrev, \
card->cid.fwrev, \
card->cid.year, \
card->cid.month)
/*
* Unconditionally quirk add/remove.
*/
static inline void __maybe_unused add_quirk(struct mmc_card *card, int data)
{
card->quirks |= data;
}
static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
{
card->quirks &= ~data;
}
#define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC)
#define mmc_card_sd(c) ((c)->type == MMC_TYPE_SD)
......@@ -163,12 +299,50 @@ void mmc_fixup_device(struct mmc_card *dev);
#define mmc_card_highspeed(c) ((c)->state & MMC_STATE_HIGHSPEED)
#define mmc_card_blockaddr(c) ((c)->state & MMC_STATE_BLOCKADDR)
#define mmc_card_ddr_mode(c) ((c)->state & MMC_STATE_HIGHSPEED_DDR)
#define mmc_sd_card_uhs(c) ((c)->state & MMC_STATE_ULTRAHIGHSPEED)
#define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC)
#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
#define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
#define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
#define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
#define mmc_card_set_ddr_mode(c) ((c)->state |= MMC_STATE_HIGHSPEED_DDR)
#define mmc_sd_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED)
#define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC)
/*
* Quirk add/remove for MMC products.
*/
static inline void __maybe_unused add_quirk_mmc(struct mmc_card *card, int data)
{
if (mmc_card_mmc(card))
card->quirks |= data;
}
static inline void __maybe_unused remove_quirk_mmc(struct mmc_card *card,
int data)
{
if (mmc_card_mmc(card))
card->quirks &= ~data;
}
/*
* Quirk add/remove for SD products.
*/
static inline void __maybe_unused add_quirk_sd(struct mmc_card *card, int data)
{
if (mmc_card_sd(card))
card->quirks |= data;
}
static inline void __maybe_unused remove_quirk_sd(struct mmc_card *card,
int data)
{
if (mmc_card_sd(card))
card->quirks &= ~data;
}
static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
{
......@@ -180,6 +354,16 @@ static inline int mmc_blksz_for_byte_mode(const struct mmc_card *c)
return c->quirks & MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
}
static inline int mmc_card_disable_cd(const struct mmc_card *c)
{
return c->quirks & MMC_QUIRK_DISABLE_CD;
}
static inline int mmc_card_nonstd_func_interface(const struct mmc_card *c)
{
return c->quirks & MMC_QUIRK_NONSTD_FUNC_IF;
}
#define mmc_card_name(c) ((c)->cid.prod_name)
#define mmc_card_id(c) (dev_name(&(c)->dev))
......@@ -203,4 +387,7 @@ struct mmc_driver {
extern int mmc_register_driver(struct mmc_driver *);
extern void mmc_unregister_driver(struct mmc_driver *);
extern void mmc_fixup_device(struct mmc_card *card,
const struct mmc_fixup *table);
#endif
include/linux/mmc/core.h
View file @ 8c1c77ff
......@@ -92,7 +92,7 @@ struct mmc_command {
* actively failing requests
*/
unsigned int erase_timeout; /* in milliseconds */
unsigned int cmd_timeout_ms; /* in milliseconds */
struct mmc_data *data; /* data segment associated with cmd */
struct mmc_request *mrq; /* associated request */
......@@ -120,6 +120,7 @@ struct mmc_data {
};
struct mmc_request {
struct mmc_command *sbc; /* SET_BLOCK_COUNT for multiblock */
struct mmc_command *cmd;
struct mmc_data *data;
struct mmc_command *stop;
......@@ -133,8 +134,10 @@ struct mmc_card;
extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);
extern int mmc_app_cmd(struct mmc_host *, struct mmc_card *);
extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *,
struct mmc_command *, int);
extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int);
#define MMC_ERASE_ARG 0x00000000
#define MMC_SECURE_ERASE_ARG 0x80000000
......
include/linux/mmc/host.h
View file @ 8c1c77ff
......@@ -50,12 +50,30 @@ struct mmc_ios {
#define MMC_TIMING_LEGACY 0
#define MMC_TIMING_MMC_HS 1
#define MMC_TIMING_SD_HS 2
#define MMC_TIMING_UHS_SDR12 MMC_TIMING_LEGACY
#define MMC_TIMING_UHS_SDR25 MMC_TIMING_SD_HS
#define MMC_TIMING_UHS_SDR50 3
#define MMC_TIMING_UHS_SDR104 4
#define MMC_TIMING_UHS_DDR50 5
unsigned char ddr; /* dual data rate used */
#define MMC_SDR_MODE 0
#define MMC_1_2V_DDR_MODE 1
#define MMC_1_8V_DDR_MODE 2
unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */
#define MMC_SIGNAL_VOLTAGE_330 0
#define MMC_SIGNAL_VOLTAGE_180 1
#define MMC_SIGNAL_VOLTAGE_120 2
unsigned char drv_type; /* driver type (A, B, C, D) */
#define MMC_SET_DRIVER_TYPE_B 0
#define MMC_SET_DRIVER_TYPE_A 1
#define MMC_SET_DRIVER_TYPE_C 2
#define MMC_SET_DRIVER_TYPE_D 3
};
struct mmc_host_ops {
......@@ -117,6 +135,10 @@ struct mmc_host_ops {
/* optional callback for HC quirks */
void (*init_card)(struct mmc_host *host, struct mmc_card *card);
int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios);
int (*execute_tuning)(struct mmc_host *host);
void (*enable_preset_value)(struct mmc_host *host, bool enable);
};
struct mmc_card;
......@@ -173,6 +195,22 @@ struct mmc_host {
/* DDR mode at 1.2V */
#define MMC_CAP_POWER_OFF_CARD (1 << 13) /* Can power off after boot */
#define MMC_CAP_BUS_WIDTH_TEST (1 << 14) /* CMD14/CMD19 bus width ok */
#define MMC_CAP_UHS_SDR12 (1 << 15) /* Host supports UHS SDR12 mode */
#define MMC_CAP_UHS_SDR25 (1 << 16) /* Host supports UHS SDR25 mode */
#define MMC_CAP_UHS_SDR50 (1 << 17) /* Host supports UHS SDR50 mode */
#define MMC_CAP_UHS_SDR104 (1 << 18) /* Host supports UHS SDR104 mode */
#define MMC_CAP_UHS_DDR50 (1 << 19) /* Host supports UHS DDR50 mode */
#define MMC_CAP_SET_XPC_330 (1 << 20) /* Host supports >150mA current at 3.3V */
#define MMC_CAP_SET_XPC_300 (1 << 21) /* Host supports >150mA current at 3.0V */
#define MMC_CAP_SET_XPC_180 (1 << 22) /* Host supports >150mA current at 1.8V */
#define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */
#define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */
#define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */
#define MMC_CAP_MAX_CURRENT_200 (1 << 26) /* Host max current limit is 200mA */
#define MMC_CAP_MAX_CURRENT_400 (1 << 27) /* Host max current limit is 400mA */
#define MMC_CAP_MAX_CURRENT_600 (1 << 28) /* Host max current limit is 600mA */
#define MMC_CAP_MAX_CURRENT_800 (1 << 29) /* Host max current limit is 800mA */
#define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */
mmc_pm_flag_t pm_caps; /* supported pm features */
......@@ -321,10 +359,19 @@ static inline int mmc_card_is_removable(struct mmc_host *host)
return !(host->caps & MMC_CAP_NONREMOVABLE) && mmc_assume_removable;
}
static inline int mmc_card_is_powered_resumed(struct mmc_host *host)
static inline int mmc_card_keep_power(struct mmc_host *host)
{
return host->pm_flags & MMC_PM_KEEP_POWER;
}
static inline int mmc_card_wake_sdio_irq(struct mmc_host *host)
{
return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ;
}
static inline int mmc_host_cmd23(struct mmc_host *host)
{
return host->caps & MMC_CAP_CMD23;
}
#endif
include/linux/mmc/ioctl.h 0 → 100644
View file @ 8c1c77ff
#ifndef LINUX_MMC_IOCTL_H
#define LINUX_MMC_IOCTL_H
struct mmc_ioc_cmd {
/* Implies direction of data. true = write, false = read */
int write_flag;
/* Application-specific command. true = precede with CMD55 */
int is_acmd;
__u32 opcode;
__u32 arg;
__u32 response[4]; /* CMD response */
unsigned int flags;
unsigned int blksz;
unsigned int blocks;
/*
* Sleep at least postsleep_min_us useconds, and at most
* postsleep_max_us useconds *after* issuing command. Needed for
* some read commands for which cards have no other way of indicating
* they're ready for the next command (i.e. there is no equivalent of
* a "busy" indicator for read operations).
*/
unsigned int postsleep_min_us;
unsigned int postsleep_max_us;
/*
* Override driver-computed timeouts. Note the difference in units!
*/
unsigned int data_timeout_ns;
unsigned int cmd_timeout_ms;
/*
* For 64-bit machines, the next member, ``__u64 data_ptr``, wants to
* be 8-byte aligned. Make sure this struct is the same size when
* built for 32-bit.
*/
__u32 __pad;
/* DAT buffer */
__u64 data_ptr;
};
#define mmc_ioc_cmd_set_data(ic, ptr) ic.data_ptr = (__u64)(unsigned long) ptr
#define MMC_IOC_CMD _IOWR(MMC_BLOCK_MAJOR, 0, struct mmc_ioc_cmd)
/*
* Since this ioctl is only meant to enhance (and not replace) normal access
* to the mmc bus device, an upper data transfer limit of MMC_IOC_MAX_BYTES
* is enforced per ioctl call. For larger data transfers, use the normal
* block device operations.
*/
#define MMC_IOC_MAX_BYTES (512L * 256)
#endif /* LINUX_MMC_IOCTL_H */
include/linux/mmc/mmc.h
View file @ 8c1c77ff
......@@ -50,6 +50,7 @@
#define MMC_SET_BLOCKLEN 16 /* ac [31:0] block len R1 */
#define MMC_READ_SINGLE_BLOCK 17 /* adtc [31:0] data addr R1 */
#define MMC_READ_MULTIPLE_BLOCK 18 /* adtc [31:0] data addr R1 */
#define MMC_SEND_TUNING_BLOCK 19 /* adtc R1 */
/* class 3 */
#define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */
......@@ -82,6 +83,12 @@
#define MMC_APP_CMD 55 /* ac [31:16] RCA R1 */
#define MMC_GEN_CMD 56 /* adtc [0] RD/WR R1 */
static inline bool mmc_op_multi(u32 opcode)
{
return opcode == MMC_WRITE_MULTIPLE_BLOCK ||
opcode == MMC_READ_MULTIPLE_BLOCK;
}
/*
* MMC_SWITCH argument format:
*
......@@ -255,18 +262,23 @@ struct _mmc_csd {
#define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */
#define EXT_CSD_PARTITION_SUPPORT 160 /* RO */
#define EXT_CSD_WR_REL_PARAM 166 /* RO */
#define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */
#define EXT_CSD_PART_CONFIG 179 /* R/W */
#define EXT_CSD_ERASED_MEM_CONT 181 /* RO */
#define EXT_CSD_BUS_WIDTH 183 /* R/W */
#define EXT_CSD_HS_TIMING 185 /* R/W */
#define EXT_CSD_REV 192 /* RO */
#define EXT_CSD_STRUCTURE 194 /* RO */
#define EXT_CSD_CARD_TYPE 196 /* RO */
#define EXT_CSD_PART_SWITCH_TIME 199 /* RO */
#define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
#define EXT_CSD_S_A_TIMEOUT 217 /* RO */
#define EXT_CSD_REL_WR_SEC_C 222 /* RO */
#define EXT_CSD_HC_WP_GRP_SIZE 221 /* RO */
#define EXT_CSD_ERASE_TIMEOUT_MULT 223 /* RO */
#define EXT_CSD_HC_ERASE_GRP_SIZE 224 /* RO */
#define EXT_CSD_BOOT_MULT 226 /* RO */
#define EXT_CSD_SEC_TRIM_MULT 229 /* RO */
#define EXT_CSD_SEC_ERASE_MULT 230 /* RO */
#define EXT_CSD_SEC_FEATURE_SUPPORT 231 /* RO */
......@@ -276,6 +288,12 @@ struct _mmc_csd {
* EXT_CSD field definitions
*/
#define EXT_CSD_WR_REL_PARAM_EN (1<<2)
#define EXT_CSD_PART_CONFIG_ACC_MASK (0x7)
#define EXT_CSD_PART_CONFIG_ACC_BOOT0 (0x1)
#define EXT_CSD_PART_CONFIG_ACC_BOOT1 (0x2)
#define EXT_CSD_CMD_SET_NORMAL (1<<0)
#define EXT_CSD_CMD_SET_SECURE (1<<1)
#define EXT_CSD_CMD_SET_CPSECURE (1<<2)
......
include/linux/mmc/sd.h
View file @ 8c1c77ff
......@@ -17,6 +17,7 @@
/* This is basically the same command as for MMC with some quirks. */
#define SD_SEND_RELATIVE_ADDR 3 /* bcr R6 */
#define SD_SEND_IF_COND 8 /* bcr [11:0] See below R7 */
#define SD_SWITCH_VOLTAGE 11 /* ac R1 */
/* class 10 */
#define SD_SWITCH 6 /* adtc [31:0] See below R1 */
......@@ -32,6 +33,12 @@
#define SD_APP_OP_COND 41 /* bcr [31:0] OCR R3 */
#define SD_APP_SEND_SCR 51 /* adtc R1 */
/* OCR bit definitions */
#define SD_OCR_S18R (1 << 24) /* 1.8V switching request */
#define SD_ROCR_S18A SD_OCR_S18R /* 1.8V switching accepted by card */
#define SD_OCR_XPC (1 << 28) /* SDXC power control */
#define SD_OCR_CCS (1 << 30) /* Card Capacity Status */
/*
* SD_SWITCH argument format:
*
......@@ -59,7 +66,7 @@
#define SCR_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.01 */
#define SCR_SPEC_VER_1 1 /* Implements system specification 1.10 */
#define SCR_SPEC_VER_2 2 /* Implements system specification 2.00 */
#define SCR_SPEC_VER_2 2 /* Implements system specification 2.00-3.0X */
/*
* SD bus widths
......
include/linux/mmc/sdhci.h
View file @ 8c1c77ff
......@@ -85,6 +85,8 @@ struct sdhci_host {
#define SDHCI_QUIRK_NO_HISPD_BIT (1<<29)
/* Controller treats ADMA descriptors with length 0000h incorrectly */
#define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC (1<<30)
/* The read-only detection via SDHCI_PRESENT_STATE register is unstable */
#define SDHCI_QUIRK_UNSTABLE_RO_DETECT (1<<31)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */
......@@ -109,11 +111,16 @@ struct sdhci_host {
#define SDHCI_USE_ADMA (1<<1) /* Host is ADMA capable */
#define SDHCI_REQ_USE_DMA (1<<2) /* Use DMA for this req. */
#define SDHCI_DEVICE_DEAD (1<<3) /* Device unresponsive */
#define SDHCI_SDR50_NEEDS_TUNING (1<<4) /* SDR50 needs tuning */
#define SDHCI_NEEDS_RETUNING (1<<5) /* Host needs retuning */
#define SDHCI_AUTO_CMD12 (1<<6) /* Auto CMD12 support */
#define SDHCI_AUTO_CMD23 (1<<7) /* Auto CMD23 support */
unsigned int version; /* SDHCI spec. version */
unsigned int max_clk; /* Max possible freq (MHz) */
unsigned int timeout_clk; /* Timeout freq (KHz) */
unsigned int clk_mul; /* Clock Muliplier value */
unsigned int clock; /* Current clock (MHz) */
u8 pwr; /* Current voltage */
......@@ -145,6 +152,14 @@ struct sdhci_host {
unsigned int ocr_avail_sd;
unsigned int ocr_avail_mmc;
wait_queue_head_t buf_ready_int; /* Waitqueue for Buffer Read Ready interrupt */
unsigned int tuning_done; /* Condition flag set when CMD19 succeeds */
unsigned int tuning_count; /* Timer count for re-tuning */
unsigned int tuning_mode; /* Re-tuning mode supported by host */
#define SDHCI_TUNING_MODE_1 0
struct timer_list tuning_timer; /* Timer for tuning */
unsigned long private[0] ____cacheline_aligned;
};
#endif /* __SDHCI_H */
include/linux/mmc/sh_mobile_sdhi.h
View file @ 8c1c77ff
......@@ -3,12 +3,16 @@
#include <linux/types.h>
struct platform_device;
struct tmio_mmc_data;
struct sh_mobile_sdhi_info {
int dma_slave_tx;
int dma_slave_rx;
unsigned long tmio_flags;
unsigned long tmio_caps;
u32 tmio_ocr_mask; /* available MMC voltages */
struct tmio_mmc_data *pdata;
void (*set_pwr)(struct platform_device *pdev, int state);
int (*get_cd)(struct platform_device *pdev);
};
......
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